PACS 1998


00.       GENERAL

01.       Communication, education, history, and philosophy

01.10.-m  Announcements, news, and organizational activities
01.10.Cr  Announcements, news, and awards
01.10.Fv  Conferences, lectures, and institutes
01.10.Hx  Physics organizational activities

01.30.-y  Physics literature and publications
01.30.Bb  Publications of lectures (advanced institutes, summer schools,
          etc.)
01.30.Cc  Conference proceedings
01.30.Ee  Monographs and collections
01.30.Kj  Handbooks, dictionaries, tables, and data compilations
01.30.Mm  Textbooks for graduates and researchers
01.30.Pp  Textbooks for undergraduates
01.30.Rr  Surveys and tutorial papers; resource letters
01.30.Tt  Bibliographies
01.30.Xx  Electronic publications

01.40.-d  Education
01.40.Di  Course design and evaluation
01.40.Ej  Science in elementary and secondary school
01.40.Gm  Curricula; teaching methods, strategies, and evaluation
01.40.Jp  Teacher training

01.50.-i  Educational aids
01.50.Fr  Audio and visual aids, films
01.50.Ht  Instructional computer use
01.50.Kw  Testing theory and techniques
01.50.My  Demonstration experiments and apparatus
01.50.Pa  Laboratory experiments and apparatus
01.50.Qb  Laboratory course design, organization, and evaluation
01.50.Te  Buildings and facilities
01.50.Wg  Physics of toys

01.52.+r  National and international laboratory facilities

01.55.+b  General physics

01.60.+q  Biographical, historical, and personal notes

01.65.+g  History of science

01.70.+w  Philosophy of science

01.75.+m  Science and society

01.80.+b  Physics of sports

01.90.+g  Other topics of general interest

02.       Mathematical methods in physics

02.10.-v  Logic, set theory, and algebra
02.10.By  Logic and foundations
02.10.Cz  Set theory
02.10.Eb  Combinatorics
02.10.Gd  Order, lattices, and ordered algebraic structures
02.10.Jf  General mathematical systems
02.10.Lh  Number theory
02.10.Nj  Algebraic number theory, field theory, and polynomials
02.10.Pk  Commutative rings and algebras
02.10.Rn  Algebraic geometry
02.10.Sp  Linear and multilinear algebra; matrix theory (finite and
          infinite)
02.10.Tq  Associative rings and algebras
02.10.Vr  Nonassociative rings and algebras
02.10.Ws  Category theory and homological algebra

02.20.-a  Group theory
          (for algebraic methods in quantum mechanics, see 03.65.F; for
          symmetries in elementary particle physics, see 11.30)
02.20.Df  Finite groups
02.20.Fh  Infinite groups
02.20.Hj  Classical linear algebraic groups
02.20.Km  Abelian groups
02.20.Mp  Semigroups
02.20.Nq  Topological groups, general
02.20.Qs  General properties, structure, and representation of Lie groups
02.20.Rt  Discrete subgroups of Lie groups
02.20.Sv  Lie algebras of Lie groups
02.20.Tw  Infinite-dimensional Lie groups

02.30.-f  Function theory, analysis
02.30.Bi  Real functions
02.30.Cj  Measure and integration
02.30.Dk  Functions of a complex variable
02.30.Em  Potential theory
02.30.Fn  Several complex variables and analytic spaces
02.30.Gp  Special functions
02.30.Hq  Ordinary differential equations
02.30.Jr  Partial differential equations
02.30.Ks  Delay and functional equations
02.30.Lt  Sequences, series, and summability
02.30.Mv  Approximations and expansions
02.30.Nw  Fourier analysis
02.30.Px  Abstract harmonic analysis
02.30.Qy  Integral transforms and operational calculus
02.30.Rz  Integral equations
02.30.Sa  Functional analysis
02.30.Tb  Operator theory
02.30.Wd  Calculus of variations and optimal control

02.40.-k  Geometry, differential geometry, and topology
          (see also 04 Relativity and gravitation)
02.40.Dr  Euclidean and projective geometries
02.40.Ft  Convex sets and geometric inequalities
02.40.Hw  Classical differential geometry
02.40.Ky  Riemannian geometries
02.40.Ma  Global differential geometry
02.40.Pc  General topology
02.40.Re  Algebraic topology
02.40.Sf  Manifolds and cell complexes
02.40.Vh  Global analysis and analysis on manifolds

02.50.-r  Probability theory, stochastic processes, and statistics
          (see also 05 Statistical physics)
02.50.Cw  Probability theory
02.50.Ey  Stochastic processes
02.50.Fz  Stochastic analysis
02.50.Ga  Markov processes
02.50.Hb  Queuing theory
02.50.Kd  Foundations of statistics; sufficiency
02.50.Le  Decision theory and game theory
02.50.Ng  Distribution theory and Monte Carlo studies
02.50.Ph  Parametric inference
02.50.Rj  Nonparametric inference
02.50.Sk  Multivariate analysis
02.50.Vn  Linear inference
02.50.Wp  Inference from stochastic processes

02.60.-x  Numerical approximation and analysis
02.60.Cb  Numerical simulation; solution of equations
02.60.Dc  Numerical linear algebra
02.60.Ed  Interpolation; curve fitting
02.60.Gf  Algorithms for functional approximation
02.60.Jh  Numerical differentiation and integration
02.60.Lj  Ordinary and partial differential equations; boundary value
          problems
02.60.Nm  Integral and integrodifferential equations
02.60.Pn  Numerical optimization

02.70.-c  Computational techniques
02.70.Bf  Finite-difference methods
02.70.Dh  Finite-element and Galerkin methods
02.70.Fj  Finite-volume methods
02.70.Hm  Spectral methods
02.70.Jn  Collocation methods
02.70.Lq  Monte Carlo and statistical methods
02.70.Ns  Molecular dynamics and particle methods
02.70.Pt  Boundary-integral methods
02.70.Rw  Other computational methods

02.90.+p  Other topics in mathematical methods in physics

03.       Classical and quantum physics: mechanics and fields

03.20.+i  Classical mechanics of discrete systems: general mathematical
          aspects
          (for applied aspects of classical mechanics of discrete systems,
          see 46.10)

03.30.+p  Special relativity

03.40.-t  Classical mechanics of continuous media: general mathematical
          aspects
03.40.Dz  Mathematical theory of elasticity
          (see also 83.10 Continuum mechanics, 46.30 Structural mechanics
          of shells, plates, and beams, 62.20.D Elasticity of solids)
03.40.Gc  Fluid dynamics: general mathematical aspects
          (see also 47 Fluid dynamics)
03.40.Kf  Waves and wave propagation: general mathematical aspects
          (see also 62.30 Mechanical and elastic waves, 43.20 General
          linear acoustics, 83.50.T, V--in rheology)

03.50.-z  Classical field theory
03.50.De  Maxwell theory: general mathematical aspects
          (for applied classical electrodynamics, see 41)
03.50.Kk  Other special classical field theories

03.65.-w  Quantum mechanics
          (see also 05.30 Quantum statistical mechanics)
03.65.Bz  Foundations, theory of measurement, miscellaneous theories
          (including Aharonov-Bohm effect, Bell inequalities, Berry's
          phase)
03.65.Ca  Formalism
03.65.Db  Functional analytical methods
03.65.Fd  Algebraic methods
          (see also 02.20 Group theory)
03.65.Ge  Solutions of wave equations: bound states
03.65.Nk  Nonrelativistic scattering theory
          (see also 03.80 General theory of scattering)
03.65.Pm  Relativistic wave equations
03.65.Sq  Semiclassical theories and applications

03.67.-a  Quantum information
03.67.Dd  Quantum cryptography
03.67.Hk  Quantum communication
03.67.Lx  Quantum computation

03.70.+k  Theory of quantized fields
          (see also 11.10 Field theory)

03.75.-b  Matter waves
          (for atom interferometry techniques, see 39.20--in atomic and
          molecular physics)
03.75.Be  Atom and neutron optics
03.75.Dg  Atom and neutron interferometry
03.75.Fi  Phase coherent atomic ensemble (Bose condensation)

03.80.+r  General theory of scattering
          (see also 03.65.N Nonrelativistic scattering theory, 11.55 S-
          matrix theory; analytic structure of amplitudes, and 11.80
          Relativistic scattering theory)

04.       General relativity and gravitation
          (for relativistic cosmology, see 98.80.H)

......    Special relativity, see 03.30

04.20.-q  Classical general relativity
          (see also 02.40 Geometry and topology)
04.20.Cv  Fundamental problems and general formalism
04.20.Dw  Singularities and cosmic censorship
04.20.Ex  Initial value problem, existence and uniqueness of solutions
04.20.Fy  Canonical formalism, Lagrangians, and variational principles
04.20.Gz  Spacetime topology, causal structure, spinor structure
04.20.Ha  Asymptotic structure
04.20.Jb  Exact solutions

04.25.-g  Approximation methods; equations of motion
04.25.Dm  Numerical relativity
04.25.Nx  Post-Newtonian approximation; perturbation theory; related
          approximations

04.30.-w  Gravitational waves: theory
04.30.Db  Wave generation and sources
04.30.Nk  Wave propagation and interactions

04.40.-b  Self-gravitating systems; continuous media and classical fields
          in curved spacetime
04.40.Dg  Relativistic stars: structure, stability, and oscillations
          (for relativistic aspects of late stages of star evolution, see
          97.60)
04.40.Nr  Einstein-Maxwell spacetimes, spacetimes with fluids, radiation or
          classical fields

04.50.+h  Gravity in more than four dimensions, Kaluza-Klein theory,
          unified field theories; alternative theories of gravity
          (see also 11.25.M Compactification and four-dimensional models)

04.60.-m  Quantum gravity
          (see also 98.80.H Quantum cosmology)
04.60.Ds  Canonical quantization
04.60.Gw  Covariant and sum-over-histories quantization
04.60.Kz  Lower dimensional models; minisuperspace models
04.60.Nc  Lattice and discrete methods

04.62.+v  Quantum field theory in curved spacetime

04.65.+e  Supergravity
          (see also 12.60.J Supersymmetric models)

04.70.-s  Physics of black holes
          (see also 97.60.L--in astronomy)
04.70.Bw  Classical black holes
04.70.Dy  Quantum aspects of black holes, evaporation, thermodynamics

04.80.-y  Experimental studies of gravity
04.80.Cc  Experimental tests of gravitational theories
04.80.Nn  Gravitational wave detectors and experiments
          (see also 95.55.Y--in astronomy)

04.90.+e  Other topics in general relativity and gravitation

05.       Statistical physics and thermodynamics
          (see also 02.50 Probability theory, stochastic processes, and
          statistics)

05.20.-y  Statistical mechanics
05.20.Dd  Kinetic theory
05.20.Gg  Classical ensemble theory

05.30.-d  Quantum statistical mechanics
05.30.Ch  Quantum ensemble theory
05.30.Fk  Fermion systems and electron gas
05.30.Jp  Boson systems

05.40.+j  Fluctuation phenomena, random processes, and Brownian motion

05.45.+b  Theory and models of chaotic systems

05.50.+q  Lattice theory and statistics; Ising problems
          (see also 64.60.C Order-disorder transformations and statistical
          mechanics of model systems and 75.10.H Classical spin models)

05.60.+w  Transport processes: theory

05.70.-a  Thermodynamics
          (see also 64 Equations of state, phase equilibria, and phase
          transitions, and 65 Thermal properties of condensed matter; for
          chemical thermodynamics, see 82.60)
05.70.Ce  Thermodynamic functions and equations of state
05.70.Fh  Phase transitions: general aspects
05.70.Jk  Critical point phenomena
05.70.Ln  Nonequilibrium thermodynamics, irreversible processes
          (see also 82.20.M Nonequilibrium kinetics, and 82.40.B
          Oscillations, chaos, and bifurcations in homogeneous
          nonequilibrium reactors)

05.90.+m  Other topics in statistical physics and thermodynamics

06.       Metrology, measurements, and laboratory procedures

06.20.-f  Metrology
06.20.Dk  Measurement and error theory
06.20.Fn  Units and standards
06.20.Jr  Determination of fundamental constants

06.30.-k  Measurements common to several branches of physics and astronomy
06.30.Bp  Spatial dimensions (e.g., position, lengths, volume, angles,
          displacements, including nanometer-scale displacements)
06.30.Dr  Mass and density
06.30.Ft  Time and frequency
06.30.Gv  Velocity, acceleration, and rotation

06.60.-c  Laboratory procedures
06.60.Ei  Sample preparation (including design of sample holders)
06.60.Jn  High-speed techniques (microsecond to femtosecond)
06.60.Mr  Testing and inspecting procedures
06.60.Sx  Positioning and alignment; manipulating, remote handling
06.60.Vz  Workshop procedures (welding, machining, lubrication, bearings,
          etc.)
06.60.Wa  Laboratory safety procedures
06.60.Yb  Other laboratory procedures

......    National and international laboratory facilities, see 01.52

06.90.+v  Other topics in metrology, measurements, and laboratory
          procedures

07.       Instruments, apparatus, components, and techniques common to
          several branches of physics and astronomy
          (see also each subdiscipline for specialized instrumentation and
          techniques)

07.05.-t  Computers in experimental physics
......    Computer in physics education, see 01.50.H
......    Computational techniques, see 02.70--in mathematical methods in
          physics
......    Applications to optical system design, see 42.15.E
07.05.Bx  Computer systems: hardware, operating systems, computer
          languages, and utilities
07.05.Dz  Control systems
07.05.Fb  Design of experiments
07.05.Hd  Data acquisition: hardware and software
07.05.Kf  Data analysis: algorithms and implementation; data management
07.05.Mh  Neural networks, fuzzy logic, artificial intelligence
07.05.Pj  Image processing
          (see also 42.30.V in optics)
07.05.Rm  Data presentation and visualization: algorithms and
          implementation
07.05.Tp  Computer modeling and simulation
07.05.Wr  Computer interfaces
07.05.Ys  Other topics in computers in experimental physics

07.07.-a  General equipment and techniques
07.07.Df  Sensors (chemical, optical, electrical, movement, gas, etc.);
          remote sensing
07.07.Hj  Display and recording equipment, oscilloscopes, TV cameras, etc.
07.07.Mp  Transducers
07.07.Tw  Servo and control equipment; robots
07.07.Vx  Hygrometers
07.07.Yz  Other equipment and techniques

07.10.-h  Mechanical instruments, equipment, and techniques
07.10.Cm  Micromechanical devices and systems
07.10.Fq  Vibration isolation
07.10.Lw  Balance systems, tensile machines, etc.
07.10.Pz  Instruments for strain, force, and torque
07.10.Yg  Other mechanical instruments, equipment, and techniques
          (including pendulum, gyroscopes, centrifuges, etc.)

07.20.-n  Thermal instruments, apparatus, and techniques
07.20.Dt  Thermometry
07.20.Fw  Calorimetry
07.20.Hy  Furnaces; heaters
07.20.Ka  High-temperature techniques and instrumentation; pyrometry
07.20.Mc  Cryogenics, refrigerators; low-temperature techniques
07.20.Pe  Heat engines; heat pumps
07.20.Ym  Other thermal instruments and techniques

07.30.-t  Vacuum apparatus and techniques
          (see also 47.45 Rarefied gas dynamics)
07.30.Bx  Degasification, residual gas
07.30.Cy  Vacuum pumps
07.30.Dz  Vacuum gauges
07.30.Hd  Vacuum testing methods; leak detectors
07.30.Kf  Vacuum chambers, auxiliary apparatus, and materials

07.35.+k  High-pressure apparatus and techniques; shock tubes; diamond
          anvil cells

07.50.-e  Electrical and electronic components, instruments, and techniques
07.50.Ek  Circuits and circuit components
          (see also 84.30 Electronic circuits and 84.32 Passive circuit
          components)
07.50.Hp  Electrical noise and shielding, interference
07.50.Ls  Electrometers
07.50.Qx  Signal processing electronics
          (see also 84.40.U--in radiowave and microwave technology)
07.50.Yd  Other electrical and electronic components, instruments, and
          techniques

07.55.-w  Magnetic components, instruments and techniques
07.55.Db  Generation of magnetic fields; magnets
07.55.Ge  Magnetometers for magnetic field measurements
07.55.Jg  Magnetometers for susceptibility, magnetic moment, and
          magnetization measurements
07.55.Nk  Magnetic shielding in instruments
07.55.Yv  Other magnetic instruments and techniques

07.57.-c  Infrared, submillimeter wave, microwave and radiowave
          instruments, equipment and techniques
          (for infrared and radio telescopes, see 95.55)
07.57.Hm  Infrared, submillimeter wave, microwave, and radiowave sources
07.57.Kp  Bolometers; infrared, submillimeter wave, microwave, and
          radiowave receivers and detectors
          (see also 85.60.G Photodetectors)
07.57.Pt  Submillimeter wave, microwave and radiowave spectrometers;
          magnetic resonance spectrometers, auxiliary equipment, and
          techniques
07.57.Ty  Infrared spectrometers, auxiliary equipment, and techniques
07.57.Yb  Other infrared, submillimeter wave, microwave, and radiowave
          instruments, equipment, and techniques

07.60.-j  Optical instruments, equipment, and techniques
......    Optical sources, see 42.72
......    Optical elements, devices, and systems 42.79
......    Optoelectric devices 85.60
......    Optical telescopes, see 95.55
07.60.Dq  Photometers, radiometers, and colorimeters
07.60.Fs  Polarimeters and ellipsometers
07.60.Hv  Refractometers and reflectometers
07.60.Ly  Interferometers
07.60.Pb  Conventional optical microscopes
          (for near-field scanning optical microscopes, see 07.79.B)
07.60.Rd  Visible and ultraviolet spectrometers
07.60.Vg  Fiber-optic instruments
          (see also 42.81 Fiber optics)
07.60.Yi  Other optical instruments, equipment and techniques

07.64.+z  Acoustic instruments, equipment, and techniques

07.68.+m  Photography, photographic instruments and techniques; xerography

07.75.+h  Mass spectrometers and related techniques

07.77.-n  Atomic, molecular, and charged-particle sources and detectors
07.77.Gx  Atomic and molecular beam sources and detectors
07.77.Ka  Charged-particle beam sources and detectors

07.78.+s  Electron, positron, and ion microscopes, electron
          diffractometers, and related techniques

07.79.-v  Scanning probe microscopes, components, and techniques
07.79.Cz  Scanning tunneling microscopes
07.79.Fc  Near-field scanning optical microscopes
07.79.Lh  Atomic force microscopes
07.79.Pk  Magnetic force microscopes
07.79.Sp  Friction force microscopes

07.81.+a  Electron, ion spectrometers, and related techniques

07.85.-m  X- and gamma-ray instruments and techniques
          (for x- and gamma-ray telescopes, see 95.55.K)
07.85.Fv  X- and gamma-ray sources, mirrors, gratings, and detectors
07.85.Jy  Diffractometers
07.85.Nc  X-ray and gamma-ray spectrometers
07.85.Qe  Synchrotron radiation instrumentation
07.85.Tt  X-ray microscopes
07.85.Yk  Other x-ray and gamma-ray instruments and techniques

07.87.+v  Spaceborne and space research instruments, apparatus, and
          components (satellites, space vehicles, etc.)

07.88.+y  Instruments for environmental pollution measurements

07.89.+b  Environmental effects on instruments (e.g., radiation and
          pollution effects)

07.90.+c  Other topics in instruments, apparatus, components, and
          techniques common to several branches of physics and astronomy

10.       THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
          (for cosmic rays, see 96.40; for experimental methods and
          instrumentation, see 29)

11.       General theory of fields and particles
          (see also 03.65 Quantum mechanics, 03.70 Theory of quantized
          fields)

11.10.-z  Field theory
          (for gauge field theories, see 11.15)
11.10.Cd  Axiomatic approach
11.10.Ef  Lagrangian and Hamiltonian approach
11.10.Gh  Renormalization
11.10.Hi  Renormalization group evolution of parameters
11.10.Jj  Asymptotic problems and properties
11.10.Kk  Field theories in dimensions other than four
          (see also 04.50 Gravity in more than four dimensions; 04.60.K
          Lower dimensional models in quantum gravity)
11.10.Lm  Nonlinear or nonlocal theories and models
          (see also 11.27 Extended classical solutions; cosmic strings,
          domain walls, texture)
11.10.St  Bound and unstable states; Bethe-Salpeter equations
11.10.Wx  Finite-temperature field theory

......    Relativistic wave equations, see 03.65.P

11.15.-q  Gauge field theories
11.15.Bt  General properties of perturbation theory
11.15.Ex  Spontaneous breaking of gauge symmetries
11.15.Ha  Lattice gauge theory
          (see also 12.38.G Lattice QCD calculations)
11.15.Kc  Classical and semiclassical techniques
11.15.Me  Strong-coupling expansions
11.15.Pg  Expansions for large numbers of components (e.g.,
          1/N[subon]c[suboff] expansions)
11.15.Tk  Other nonperturbative techniques

11.25.-w  Theory of fundamental strings
11.25.Db  Properties of perturbation theory
11.25.Hf  Conformal field theory, algebraic structures
11.25.Mj  Compactification and four-dimensional models
11.25.Pm  Noncritical string theory
11.25.Sq  Nonperturbative techniques; string field theory

11.27.+d  Extended classical solutions; cosmic strings, domain walls,
          texture
          (see also 98.80.C in cosmology)

11.30.-j  Symmetry and conservation laws
          (see also 02.20 Group theory)
11.30.Cp  Lorentz and Poincare invariance
11.30.Er  Charge conjugation, parity, time reversal, and other discrete
          symmetries
11.30.Fs  Global symmetries (e.g., baryon number, lepton number)
11.30.Hv  Flavor symmetries
11.30.Ly  Other internal and higher symmetries
11.30.Na  Nonlinear and dynamical symmetries (spectrum-generating
          symmetries)
11.30.Pb  Supersymmetry
          (see also 12.60.J Supersymmetric models)
11.30.Qc  Spontaneous and radiative symmetry breaking
11.30.Rd  Chiral symmetries

11.40.-q  Currents and their properties
11.40.Dw  General theory of currents
11.40.Ex  Formal properties of current algebras
          (see also 12.39.F Chiral Lagrangians)
11.40.Ha  Partially conserved axial-vector currents

11.55.-m  S-matrix theory; analytic structure of amplitudes
11.55.Bq  Analytic properties of S matrix
11.55.Ds  Exact S matrices
11.55.Fv  Dispersion relations
11.55.Hx  Sum rules
11.55.Jy  Regge formalism
          (see also 12.40.N in strong interactions)

11.80.-m  Relativistic scattering theory
          (see also 03.80 General theory of scattering)
11.80.Cr  Kinematical properties (helicity and invariant amplitudes,
          kinematic singularities, etc.)
11.80.Et  Partial-wave analysis
11.80.Fv  Approximations (eikonal approximation, variational principles,
          etc.)
11.80.Gw  Multichannel scattering
11.80.Jy  Many-body scattering and Faddeev equation
11.80.La  Multiple scattering

11.90.+t  Other topics in general field and particle theory

12.       Specific theories and interaction models; particle systematics

12.10.-g  Unified field theories and models
          (see also 04.50--in general relativity and gravitation, 11.25.M
          Compactification and four-dimensional models)
12.10.Dm  Unified theories and models of strong and electroweak
          interactions
12.10.Kt  Unification of couplings; mass relations

12.15.-y  Electroweak interactions
......    for extensions of gauge or Higgs sector, see 12.60.C or 12.60.F
12.15.Ff  Quark and lepton masses and mixing
          (see also 14.60.P Neutrino mass and mixing)
12.15.Hh  Determination of Kobayashi-Maskawa matrix elements
12.15.Ji  Applications of electroweak models to specific processes
12.15.Lk  Electroweak radiative corrections
          (see also 13.40.K Electromagnetic corrections to strong- and
          weak-interaction processes)
12.15.Mm  Neutral currents

12.20.-m  Quantum electrodynamics
12.20.Ds  Specific calculations
12.20.Fv  Experimental tests

12.38.-t  Quantum chromodynamics
......    see also 24.85 Quarks, gluons, and QCD in nuclei and nuclear
          processes
12.38.Aw  General properties of QCD (dynamics, confinement, etc.)
12.38.Bx  Perturbative calculations
12.38.Cy  Summation of perturbation theory
12.38.Gc  Lattice QCD calculations
          (see also 11.15.H Lattice gauge theory)
12.38.Lg  Other nonperturbative calculations
12.38.Mh  Quark-gluon plasma
12.38.Qk  Experimental tests

12.39.-x  Phenomenological quark models
12.39.Ba  Bag model
12.39.Dc  Skyrmions
12.39.Fe  Chiral Lagrangians
12.39.Hg  Heavy quark effective theory
12.39.Jh  Nonrelativistic quark model
12.39.Ki  Relativistic quark model
12.39.Mk  Glueball and nonstandard multi-quark/gluon states
12.39.Pn  Potential models

12.40.-y  Other models for strong interactions
12.40.Ee  Statistical models
12.40.Nn  Regge theory, duality, absorptive/optical models
          (see also 11.55.J Regge formalism)
12.40.Vv  Vector-meson dominance
12.40.Yx  Hadron mass models and calculations

12.60.-i  Models beyond the standard model
......    see also 12.10 Unified field theories and models
12.60.Cn  Extensions of electroweak gauge sector
12.60.Fr  Extensions of electroweak Higgs sector
12.60.Jv  Supersymmetric models
          (see also 04.65 Supergravity)
12.60.Nz  Technicolor models
12.60.Rc  Composite models

12.90.+b  Miscellaneous theoretical ideas and models

13.       Specific reactions and phenomenology

13.10.+q  Weak and electromagnetic interactions of leptons
          (see also 13.35 Decays of leptons)

13.15.+g  Neutrino interactions
          (for neutrino-lepton interactions, see 13.10)

13.20.-v  Leptonic and semileptonic decays of mesons
13.20.Cz  Decays of pi mesons
13.20.Eb  Decays of K mesons
13.20.Fc  Decays of charmed mesons
13.20.Gd  Decays of J/psi, upsilon, and other quarkonia
13.20.He  Decays of bottom mesons
13.20.Jf  Decays of other mesons

13.25.-k  Hadronic decays of mesons
13.25.Cq  Decays of pi mesons
13.25.Es  Decays of K mesons
13.25.Ft  Decays of charmed mesons
13.25.Gv  Decays of J/psi, upsilon, and other quarkonia
13.25.Hw  Decays of bottom mesons
13.25.Jx  Decays of other mesons

13.30.-a  Decays of baryons
13.30.Ce  Leptonic and semileptonic decays
13.30.Eg  Hadronic decays

13.35.-r  Decays of leptons
13.35.Bv  Decays of muons
13.35.Dx  Decays of taus
13.35.Hb  Decays of heavy neutrinos

13.38.-b  Decays of intermediate bosons
13.38.Be  Decays of W bosons
13.38.Dg  Decays of Z bosons

13.40.-f  Electromagnetic processes and properties
          (see also 13.10 Weak and electromagnetic interactions of leptons)
13.40.Dk  Electromagnetic mass differences
13.40.Em  Electric and magnetic moments
13.40.Gp  Electromagnetic form factors
13.40.Hq  Electromagnetic decays
13.40.Ks  Electromagnetic corrections to strong- and weak-interaction
          processes

13.60.-r  Photon and charged-lepton interactions with hadrons
          (for neutrino interactions, see 13.15)
13.60.Fz  Elastic and Compton scattering
13.60.Hb  Total and inclusive cross sections (including deep-inelastic
          processes)
13.60.Le  Meson production
13.60.Rj  Baryon production

13.65.+i  Hadron production by electron-positron collisions

13.75.-n  Hadron-induced low- and intermediate-energy reactions and
          scattering (energy <= 10 GeV)
          (for higher energies, see 13.85)
13.75.Cs  Nucleon-nucleon interactions (including antinucleons, deuterons,
          etc.)
          (for N-N interactions in nuclei, see 21.30)
13.75.Ev  Hyperon-nucleon interactions
13.75.Gx  Pion-baryon interactions
13.75.Jz  Kaon-baryon interactions
13.75.Lb  Meson-meson interactions

13.85.-t  Hadron-induced high- and super-high-energy interactions (energy >
          10 GeV)
          (for low energies, see 13.75)
13.85.Dz  Elastic scattering
13.85.Fb  Inelastic scattering: two-particle final states
13.85.Hd  Inelastic scattering: many-particle final states
13.85.Lg  Total cross sections
13.85.Ni  Inclusive production with identified hadrons
13.85.Qk  Inclusive production with identified leptons, photons, or other
          nonhadronic particles
13.85.Rm  Limits on production of particles
13.85.Tp  Cosmic-ray interactions
          (see also 96.40 Cosmic rays)

13.87.-a  Jets in large-Q[supon]2[supoff] scattering
13.87.Ce  Production
13.87.Fh  Fragmentation into hadrons

13.88.+e  Polarization in interactions and scattering

13.90.+i  Other topics in specific reactions and phenomenology of
          elementary particles

14.       Properties of specific particles

14.20.-c  Baryons (including antiparticles)
14.20.Dh  Protons and neutrons
14.20.Gk  Baryon resonances with S=0
14.20.Jn  Hyperons
14.20.Lq  Charmed baryons
14.20.Mr  Bottom baryons
14.20.Pt  Dibaryons

14.40.-n  Mesons
14.40.Aq  pi, K, and eta mesons
14.40.Cs  Other mesons with S=C=0, mass < 2.5 GeV
14.40.Ev  Other strange mesons
14.40.Gx  Mesons with S=C=B=0, mass > 2.5 GeV (including quarkonia)
14.40.Lb  Charmed mesons
14.40.Nd  Bottom mesons

14.60.-z  Leptons
14.60.Cd  Electrons (including positrons)
14.60.Ef  Muons
14.60.Fg  Taus
14.60.Hi  Other charged heavy leptons
14.60.Lm  Ordinary neutrinos (nu[subon]e[suboff], nu[subon]mu[suboff],
          nu[subon]tau[suboff])
14.60.Pq  Neutrino mass and mixing
          (see also 12.15.F Quark and lepton masses and mixing)
14.60.St  Non-standard-model neutrinos, right-handed neutrinos, etc.

14.65.-q  Quarks
14.65.Bt  Light quarks
14.65.Dw  Charmed quarks
14.65.Fy  Bottom quarks
14.65.Ha  Top quarks

14.70.-e  Gauge bosons
14.70.Bh  Photons
14.70.Dj  Gluons
14.70.Fm  W bosons
14.70.Hp  Z bosons
14.70.Pw  Other gauge bosons

14.80.-j  Other particles (including hypothetical)
14.80.Bn  Standard-model Higgs bosons
14.80.Cp  Non-standard-model Higgs bosons
14.80.Hv  Magnetic monopoles
14.80.Ly  Supersymmetric partners of known particles
14.80.Mz  Axions and other Nambu-Goldstone bosons (Majorons, familons,
          etc.)

20.       NUCLEAR PHYSICS

21.       Nuclear structure
          (for nucleon structure, see 14.20.D Properties of protons and
          neutrons; 14.20.G for nucleon resonances; 13.40 for
          electromagnetic processes and properties; 13.60.H for deep-
          inelastic structure functions)

21.10.-k  Properties of nuclei; nuclear energy levels
          (for properties of specific nuclei listed by mass ranges, see 27)
21.10.Dr  Binding energies and masses
21.10.Ft  Charge distribution
21.10.Gv  Mass and neutron distributions
21.10.Hw  Spin, parity, and isobaric spin
21.10.Jx  Spectroscopic factors
21.10.Ky  Electromagnetic moments
21.10.Ma  Level density
21.10.Pc  Single-particle levels and strength functions
21.10.Re  Collective levels
21.10.Sf  Coulomb energies
21.10.Tg  Lifetimes

21.30.-x  Nuclear forces
          (see also 13.75.C Nucleon-nucleon interactions)
21.30.Cb  Nuclear forces in vacuum
21.30.Fe  Forces in hadronic systems and effective interactions

21.45.+v  Few-body systems

21.60.-n  Nuclear-structure models and methods
21.60.Cs  Shell model
21.60.Ev  Collective models
21.60.Fw  Models based on group theory
21.60.Gx  Cluster models
21.60.Jz  Hartree-Fock and random-phase approximations
21.60.Ka  Monte Carlo models

21.65.+f  Nuclear matter

......    Exotic atoms and molecules, see 36.10

21.80.+a  Hypernuclei

21.90.+f  Other topics in nuclear structure

23.       Radioactive decay and in-beam spectroscopy
          (see also 82.55 Radiochemistry)

23.20.-g  Electromagnetic transitions
23.20.En  Angular distribution and correlation measurements
23.20.Gq  Multipole mixing ratios
23.20.Js  Multipole matrix elements
23.20.Lv  Gamma transitions and level energies
23.20.Nx  Internal conversion and extranuclear effects
23.20.Ra  Internal pair production

23.40.-s  beta decay; double beta decay; electron and muon capture
23.40.Bw  Weak-interaction and lepton (including neutrino) aspects
          (see also 14.60.P Neutrino mass and mixing)
23.40.Hc  Relation with nuclear matrix elements and nuclear structure

23.50.+z  Decay by proton emission

23.60.+e  alpha decay

23.70.+j  Heavy-particle decay

23.90.+w  Other topics in radioactive decay and in-beam spectroscopy

24.       Nuclear reactions: general

24.10.-i  Nuclear-reaction models and methods
24.10.Cn  Many-body theory
24.10.Eq  Coupled-channel and distorted-wave models
24.10.Ht  Optical and diffraction models
24.10.Jv  Relativistic models
24.10.Lx  Monte Carlo simulations (including hadron and parton cascades and
          string breaking models)
24.10.Nz  Hydrodynamic models
24.10.Pa  Thermal and statistical models

24.30.-v  Resonance reactions
24.30.Cz  Giant resonances
24.30.Gd  Other resonances

24.50.+g  Direct reactions

24.60.-k  Statistical theory and fluctuations
24.60.Dr  Statistical compound-nucleus reactions
24.60.Gv  Statistical multistep direct reactions
24.60.Ky  Fluctuation phenomena
24.60.Lz  Chaos in nuclear systems

24.70.+s  Polarization phenomena in reactions

24.75.+i  General properties of fission

24.80.+y  Nuclear tests of fundamental interactions and symmetries

24.85.+p  Quarks, gluons, and QCD in nuclei and nuclear processes

24.90.+d  Other topics in nuclear reactions: general

25.       Nuclear reactions: specific reactions

25.10.+s  Nuclear reactions involving few-nucleon systems

25.20.-x  Photonuclear reactions
25.20.Dc  Photon absorption and scattering
25.20.Lj  Photoproduction reactions

25.30.-c  Lepton-induced reactions
25.30.Bf  Elastic electron scattering
25.30.Dh  Inelastic electron scattering to specific states
25.30.Fj  Inelastic electron scattering to continuum
25.30.Hm  Positron scattering
25.30.Mr  Muon scattering (including the EMC effect)
25.30.Pt  Neutrino scattering
25.30.Rw  Electroproduction reactions

25.40.-h  Nucleon-induced reactions
          (see also 28.20 Neutron physics)
25.40.Cm  Elastic proton scattering
25.40.Dn  Elastic neutron scattering
25.40.Ep  Inelastic proton scattering
25.40.Fq  Inelastic neutron scattering
25.40.Hs  Transfer reactions
25.40.Kv  Charge-exchange reactions
25.40.Lw  Radiative capture
25.40.Ny  Resonance reactions
25.40.Qa  (p,pi) reactions
25.40.Sc  Spallation reactions
25.40.Ve  Other reactions above meson production thresholds (energies > 400
          MeV)

25.43.+t  Antiproton-induced reactions

25.45.-z  [supon]2[supoff]H-induced reactions
25.45.De  Elastic and inelastic scattering
25.45.Hi  Transfer reactions
25.45.Kk  Charge-exchange reactions

25.55.-e  [supon]3[supoff]H-,[supon]3[supoff]He-, and [supon]4[supoff]He-
          induced reactions
25.55.Ci  Elastic and inelastic scattering
25.55.Hp  Transfer reactions
25.55.Kr  Charge-exchange reactions

25.60.-t  Reactions induced by unstable nuclei
25.60.Bx  Elastic scattering
25.60.Dz  Interaction and reaction cross sections
25.60.Gc  Breakup and momentum distributions
25.60.Je  Transfer reactions
25.60.Lg  Charge-exchange reactions
25.60.Pj  Fusion reactions

25.70.-z  Low and intermediate energy heavy-ion reactions
25.70.Bc  Elastic and quasielastic scattering
25.70.De  Coulomb excitation
25.70.Ef  Resonances
25.70.Gh  Compound nucleus
25.70.Hi  Transfer reactions
25.70.Jj  Fusion and fusion-fission reactions
25.70.Kk  Charge-exchange reactions
25.70.Lm  Strongly damped collisions
25.70.Mn  Projectile and target fragmentation
25.70.Pq  Multifragment emission and correlations

25.75.-q  Relativistic heavy-ion collisions
          (collisions induced by light ions studied to calibrate
          relativistic heavy ion collisions, should be classified under
          both 25.75 and the 13 or 25 category appropriate to the light
          ions)
25.75.Dw  Particle and resonance production
25.75.Gz  Particle correlations
25.75.Ld  Collective flow

25.80.-e  Meson- and hyperon-induced reactions
25.80.Dj  Pion elastic scattering
25.80.Ek  Pion inelastic scattering
25.80.Gn  Pion charge-exchange reactions
25.80.Hp  Pion-induced reactions
25.80.Ls  Pion inclusive scattering and absorption
25.80.Nv  Kaon-induced reactions
25.80.Pw  Hyperon-induced reactions

25.85.-w  Fission reactions
25.85.Ca  Spontaneous fission
25.85.Ec  Neutron-induced fission
25.85.Ge  Charged-particle-induced fission
25.85.Jg  Photofission

25.90.+k  Other topics in nuclear reactions: specific reactions

26.       Nuclear astrophysics
          (see also 95.30 Fundamental aspects of astrophysics)

26.10.+a  Energy generation

26.20.+f  Hydrostatic stellar nucleosynthesis
          (see also 97.10.C Stellar structure, interiors, evolution,
          nucleosynthesis, ages)

26.30.+k  Nucleosynthesis in novae, supernovae and other explosive
          environments

26.35.+c  Big Bang nucleosynthesis
          (see also 98.80.F Origin and formation of the elements)

26.40.+r  Cosmic ray nucleosynthesis

26.45.+h  Elemental and isotopic abundances and evolution

26.50.+x  Nuclear physics aspects of supernovae evolution

26.60.+c  Nuclear matter aspects of neutron stars

26.65.+t  Solar neutrinos

27.       Properties of specific nuclei listed by mass ranges
          (an additional heading must be chosen with these entries, where
          the given mass number limits are, to some degree, arbitrary)

27.10.+h  A <= 5

27.20.+n  6 <= A <= 19

27.30.+t  20 <= A <= 38

27.40.+z  39 <= A <= 58

27.50.+e  59 <= A <= 89

27.60.+j  90 <= A <= 149

27.70.+q  150 <= A <= 189

27.80.+w  190 <= A <= 219

27.90.+b  220 <= A

28.       Nuclear engineering and nuclear power studies

28.20.-v  Neutron physics
          (see also 25.40 Nucleon-induced reactions)
28.20.Cz  Neutron scattering
28.20.Fc  Neutron absorption
28.20.Gd  Neutron transport: diffusion and moderation

28.41.-i  Fission reactors
28.41.Ak  Theory, design, and computerized simulation
28.41.Bm  Fuel elements, preparation, reloading, and reprocessing
28.41.Fr  Reactor coolants, reactor cooling, and heat recovery
28.41.Kw  Radioactive wastes, waste disposal
28.41.My  Reactor control systems
28.41.Pa  Moderators
28.41.Qb  Structural and shielding materials
28.41.Rc  Instrumentation
28.41.Te  Protection systems, safety, radiation monitoring, accidents, and
          dismantling

28.50.-k  Fission reactor types
28.50.Dr  Research reactors
28.50.Ft  Fast and breeder reactors
28.50.Hw  Power and production reactors
28.50.Ky  Propulsion reactors
28.50.Ma  Auxiliary generators
28.50.Qd  Other reactors

28.52.-s  Fusion reactors
          (for fusion reactor types, see 52.55)
28.52.Av  Theory, design, and computerized simulation
28.52.Cx  Fueling, heating and ignition
28.52.Fa  Materials
28.52.Lf  Components and instrumentation
28.52.Nh  Safety

28.60.+s  Isotope separation and enrichment

28.70.+y  Nuclear explosions
          (see also 47.40 Compressional flows; shock and detonation
          phenomena; for radiation protection from fallout, see 87.50.N, P-
          -in medical physics)

28.90.+i  Other topics in nuclear engineering and nuclear power studies

29.       Experimental methods and instrumentation for elementary-particle
          and nuclear physics

29.17.+w  Electrostatic, collective, and linear accelerators

29.20.-c  Cyclic accelerators and storage rings
29.20.Dh  Storage rings
29.20.Fj  Betatrons
29.20.Hm  Cyclotrons
29.20.Lq  Synchrotrons
29.20.Mr  Other cyclic accelerators

29.25.-t  Particle sources and targets
29.25.Bx  Electron sources
29.25.Dz  Neutron sources
29.25.Lg  Ion sources: polarized
29.25.Ni  Ion sources: positive and negative
29.25.Pj  Polarized and other targets
29.25.Rm  Sources of radioactive nuclei

29.27.-a  Beams in particle accelerators
          (for low energy charged-particle beams, see 41.75)
29.27.Ac  Beam injection and extraction
29.27.Bd  Beam dynamics; collective effects and instabilities
29.27.Eg  Beam handling; beam transport
29.27.Fh  Beam characteristics
29.27.Hj  Polarized beams

29.30.-h  Spectrometers and spectroscopic techniques
29.30.Aj  Charged-particle spectrometers: electric and magnetic
29.30.Dn  Electron spectroscopy
29.30.Ep  Charged-particle spectroscopy
29.30.Hs  Neutron spectroscopy
29.30.Kv  X- and gamma-ray spectroscopy
29.30.Lw  Nuclear orientation devices

......    Energy loss and stopping power, see 34.50.B and 61.80.M

29.40.-n  Radiation detectors
          (for mass spectrometers, see 07.75)
29.40.Cs  Gas-filled counters: ionization chambers, proportional, and
          avalanche counters
29.40.Gx  Tracking and position-sensitive detectors
29.40.Ka  Cherenkov detectors
29.40.Mc  Scintillation detectors
29.40.Rg  Nuclear emulsions
29.40.Vj  Calorimeters
29.40.Wk  Solid-state detectors
29.40.Ym  Other detectors

29.50.+v  Computer interfaces
          (for special purpose electronic circuits, see 07.50.E)

29.85.+c  Computer data analysis

29.90.+r  Other topics in elementary-particle and nuclear physics
          experimental methods and instrumentation

30.       ATOMIC AND MOLECULAR PHYSICS
          (for physical chemistry, see 82)

31.       Electronic structure of atoms, molecules and their ions: theory

31.10.+z  Theory of electronic structure, electronic transitions, and
          chemical binding

31.15.-p  Calculations and mathematical techniques in atomic and molecular
          physics (excluding electron correlation calculations)
          (for computational techniques, see 02.70)
31.15.Ar  Ab initio calculations
31.15.Bs  Statistical model calculations (including Thomas-Fermi and
          Thomas-Fermi-Dirac models)
31.15.Ct  Semi-empirical and empirical calculations (differential overlap,
          Hueckel, PPP methods, etc.)
31.15.Dv  Coupled cluster theory
31.15.Ew  Density-functional theory
31.15.Fx  Finite-difference schemes
31.15.Gy  Semiclassical methods
31.15.Hz  Group theory
31.15.Ja  Hyperspherical methods
31.15.Kb  Path-integral methods
31.15.Lc  Quasiparticle methods
31.15.Md  Perturbation theory
31.15.Ne  Self-consistent-field methods
31.15.Pf  Variational techniques
31.15.Qg  Molecular dynamics and other numerical methods
31.15.Rh  Valence bond calculations

31.25.-v  Electron correlation calculations for atoms and molecules
31.25.Eb  Electron-correlation calculations for atoms and ions: ground
          state
31.25.Jf  Electron-correlation calculations for atoms and ions: excited
          states
31.25.Nj  Electron-correlation calculations for diatomic molecules
31.25.Qm  Electron-correlation calculations for polyatomic molecules

31.30.-i  Corrections to electronic structure
31.30.Gs  Hyperfine interactions and isotope effects
31.30.Jv  Relativistic and quantum electrodynamic effects in atoms and
          molecules

31.50.+w  Excited states

31.70.-f  Effects of atomic and molecular interactions on electronic
          structure
          (see also 34 Atomic and molecular collision processes and
          interactions)
31.70.Dk  Environmental and solvent effects
31.70.Hq  Time-dependent phenomena: excitation and relaxation processes,
          and reaction rates
          (for chemical kinetics aspects, see 82.20.R)
31.70.Ks  Molecular solids

31.90.+s  Other topics in the theory of the electronic structure of atoms,
          molecules, and their ions

32.       Atomic properties and interactions with photons

32.10.-f  Properties of atoms and atomic ions
32.10.Bi  Atomic masses, mass spectra, abundances, and isotopes
          (for mass spectroscopy, see 07.75 and 82.80.M)
32.10.Dk  Electric and magnetic moments, polarizability
32.10.Fn  Fine and hyperfine structure
32.10.Hq  Ionization potentials, electron affinities

32.30.-r  Atomic spectra
32.30.Bv  Radio-frequency, microwave, and infrared spectra
32.30.Dx  Magnetic resonance spectra
32.30.Jc  Visible and ultraviolet spectra
32.30.Rj  X-ray spectra

32.50.+d  Fluorescence, phosphorescence (including quenching)

32.60.+i  Zeeman and Stark effects

32.70.-n  Intensities and shapes of atomic spectral lines
32.70.Cs  Oscillator strengths, lifetimes, transition moments
32.70.Fw  Absolute and relative intensities
32.70.Jz  Line shapes, widths, and shifts

32.80.-t  Photon interactions with atoms
          (see also 42.50 Quantum optics)
32.80.Bx  Level crossing and optical pumping
32.80.Cy  Atomic scattering, cross sections, and form factors; Compton
          scattering
32.80.Dz  Autoionization
32.80.Fb  Photoionization of atoms and ions
32.80.Gc  Photodetachment of atomic negative ions
32.80.Hd  Auger effect and inner-shell excitation or ionization
32.80.Lg  Mechanical effects of light on atoms, molecules, and ions
32.80.Pj  Optical cooling of atoms; trapping
32.80.Qk  Coherent control of atomic interactions with photons
32.80.Rm  Multiphoton ionization and excitation to highly excited states
          (e.g., Rydberg states)
32.80.Wr  Other multiphoton processes
32.80.Ys  Weak-interaction effects in atoms

32.90.+a  Other topics in atomic properties and interactions of atoms and
          ions with photons

33.       Molecular properties and interactions with photons

33.15.-e  Properties of molecules and molecular ions
33.15.Bh  General molecular conformation and symmetry; stereochemistry
33.15.Dj  Interatomic distances and angles
33.15.Fm  Bond strengths, dissociation energies
33.15.Hp  Barrier heights (internal rotation, inversion, rotational
          isomerism, conformational dynamics)
33.15.Kr  Electric and magnetic moments (and derivatives), polarizability,
          and magnetic susceptibility
33.15.Mt  Rotation, vibration, and vibration-rotation constants
33.15.Pw  Fine and hyperfine structure
33.15.Ry  Ionization potentials, electron affinities, molecular core
          binding energy
33.15.Ta  Mass spectra
33.15.Vb  Correlation times in molecular dynamics

33.20.-t  Molecular spectra
33.20.Bx  Radio-frequency and microwave spectra
33.20.Ea  Infrared spectra
33.20.Fb  Raman and Rayleigh spectra (including optical scattering)
33.20.Kf  Visible spectra
33.20.Lg  Ultraviolet spectra
33.20.Ni  Vacuum ultraviolet spectra
33.20.Rm  X-ray spectra
33.20.Sn  Rotational analysis
33.20.Tp  Vibrational analysis
33.20.Vq  Vibration-rotation analysis
33.20.Wr  Vibronic, rovibronic, and rotation-electron-spin interactions

33.25.+k  Nuclear resonance and relaxation
          (see also 76.60 Nuclear magnetic resonance and relaxation in
          condensed matter)

33.35.+r  Electron resonance and relaxation
          (see also 76.30 Electron paramagnetic resonance and relaxation in
          condensed matter)

33.40.+f  Multiple resonances (including double and higher-order resonance
          processes, such as double nuclear magnetic resonance, electron
          double resonance, and microwave optical double resonance)
          (see also 76.70 Magnetic double resonances and cross effects)

33.45.+x  Moessbauer spectra
          (see also 76.80 Moessbauer effect; other x-ray spectroscopy)

33.50.-j  Fluorescence and phosphorescence; radiationless transitions,
          quenching (intersystem crossing, internal conversion)
          (for energy transfer, see also 34)
33.50.Dq  Fluorescence and phosphorescence spectra
33.50.Hv  Radiationless transitions, quenching

33.55.-b  Optical activity and dichroism; magnetooptical and electrooptical
          spectra
33.55.Ad  Optical activity, optical rotation; circular dichroism
33.55.Be  Zeeman and Stark effects
33.55.Fi  Other magnetooptical and electrooptical effects

33.60.-q  Photoelectron spectra
33.60.Cv  Ultraviolet and vacuum ultraviolet photoelectron spectra
33.60.Fy  X-ray photoelectron spectra

33.70.-w  Intensities and shapes of molecular spectral lines and bands
33.70.Ca  Oscillator and band strengths, lifetimes, transition moments, and
          Franck-Condon factors
33.70.Fd  Absolute and relative line and band intensities
33.70.Jg  Line and band widths, shapes, and shifts

33.80.-b  Photon interactions with molecules
          (see also 42.50 Quantum optics)
33.80.Be  Level crossing and optical pumping
33.80.Eh  Autoionization, photoionization, and photodetachment
33.80.Gj  Diffuse spectra; predissociation, photodissociation
33.80.Ps  Optical cooling of molecules; trapping
33.80.Rv  Multiphoton ionization and excitation to highly excited states
          (e.g., Rydberg states)
33.80.Wz  Other multiphoton processes

33.90.+h  Other topics in molecular properties and interactions with
          photons

34.       Atomic and molecular collision processes and interactions
          (for atomic, molecular, and ionic collisions in plasma, see
          52.50.H)

34.10.+x  General theories and models of atomic and molecular collisions
          and interactions (including statistical theories, transition
          state, stochastic and trajectory models, etc.)

34.20.-b  Interatomic and intermolecular potentials and forces, potential
          energy surfaces for collisions
34.20.Cf  Interatomic potentials and forces
34.20.Gj  Intermolecular and atom-molecule potentials and forces
34.20.Mq  Potential energy surfaces for collisions
          (see also 82.20.K Potential energy surfaces for chemical
          reactions)

34.30.+h  Intramolecular energy transfer; intramolecular dynamics; dynamics
          of van der Waals molecules

34.50.-s  Scattering of atoms, molecules, and ions
34.50.Bw  Energy loss and stopping power
34.50.Dy  Interactions of atoms, molecules, and their ions with surfaces;
          photon and electron emission; neutralization of ions
34.50.Ez  Rotational and vibrational energy transfer
34.50.Fa  Electronic excitation and ionization of atoms (including beam-
          foil excitation and ionization)
34.50.Gb  Electronic excitation and ionization of molecules; intermediate
          molecular states (including lifetimes, state mixing, etc.)
34.50.Lf  Chemical reactions, energy disposal, and angular distribution, as
          studied by atomic and molecular beams
          (for atomic and molecular beam reactions, see 82.40.D)
34.50.Pi  State-to-state scattering analyses
34.50.Rk  Laser-modified scattering and reactions

34.60.+z  Scattering in highly excited states (e.g. Rydberg states)

34.70.+e  Charge transfer
          (for charge transfer reactions, see 82.30.F)

34.80.-i  Electron scattering
          (for electron collisions in plasma, see 52.20.F)
34.80.Bm  Elastic scattering of electrons by atoms and molecules
34.80.Dp  Atomic excitation and ionization by electron impact
34.80.Gs  Molecular excitation and ionization by electron impact
34.80.Ht  Dissociation and dissociative attachment by electron impact
34.80.Kw  Electron-ion scattering; excitation and ionization
34.80.Lx  Electron-ion recombination and electron attachment
34.80.My  Fundamental electron inelastic processes in weakly ionized gases
34.80.Nz  Spin dependence of cross sections; polarized electron beam
          experiments
34.80.Pa  Coherence and correlation in electron scattering
34.80.Qb  Laser-modified scattering

34.85.+x  Positron scattering

34.90.+q  Other topics in atomic and molecular collision processes and
          interactions

36.       Studies of special atoms, molecules, and their ions; clusters

36.10.-k  Exotic atoms and molecules (containing mesons, muons, and other
          unusual particles)
36.10.Dr  Positronium, muonium, muonic atoms and molecules
36.10.Gv  Mesonic atoms and molecules, hyperonic atoms and molecules

36.20.-r  Macromolecules and polymer molecules
          (for polymer reactions and polymerization, see 82.35; for
          biological macromolecules and polymers, see 87.15)
36.20.Cw  Molecular weights, dispersity
36.20.Ey  Conformation (statistics and dynamics)
36.20.Fz  Constitution (chains and sequences)
36.20.Hb  Configuration (bonds, dimensions)
36.20.Kd  Electronic structure and spectra
36.20.Ng  Vibrational and rotational structure, infrared and Raman spectra

36.40.-c  Atomic and molecular clusters
          (see also 61.46 Clusters, nanoparticles and nanocrystalline
          materials)
36.40.Cg  Electronic and magnetic properties of clusters
36.40.Ei  Phase transitions in clusters
36.40.Gk  Plasma and collective effects in clusters
36.40.Jn  Reactivity of clusters
36.40.Mr  Spectroscopy and geometrical structure of clusters
36.40.Qv  Stability and fragmentation of clusters
36.40.Sx  Diffusion and dynamics of clusters
36.40.Vz  Optical properties of clusters
36.40.Wa  Charged clusters

36.90.+f  Other special atoms, molecules, ions, and clusters

39.       Instrumentation and techniques for atomic and molecular physics

39.10.+j  Atomic and molecular beam sources and techniques

39.20.+q  Atom interferometry techniques
          (see also 03.75.D Atom and neutron interferometry)

39.30.+w  Spectroscopic techniques
          (see also 78.47 Time-resolved optical spectroscopies and other
          ultrafast optical measurements in condensed matter)

39.90.+d  Other instrumentation and techniques for atomic and molecular
          physics

40.       FUNDAMENTAL AREAS OF PHENOMENOLOGY (INCLUDING APPLICATIONS)

41.       Electromagnetism; electron and ion optics

41.20.-q  Electric, magnetic, and electromagnetic fields
41.20.Bt  Maxwell equations, time-varying fields, conservation laws
          (see also 03.50.D Maxwell theory)
41.20.Cv  Electrostatics; Poisson and Laplace equations, boundary-value
          problems
41.20.Gz  Magnetostatics; magnetic shielding, magnetic induction, boundary-
          value problems
41.20.Jb  Electromagnetic wave propagation; radiowave propagation
          (for light propagation, see 42.25.B; for electromagnetic waves in
          plasma, see 52.35.H; for ionospheric and magnetospheric
          propagation, see 94.20.B and 94.30.T)

41.50.+h  X-ray beams and x-ray optics
          (see also 07.85.F in instruments)

41.60.-m  Radiation by moving charges
41.60.Ap  Synchrotron radiation
          (for synchrotron radiation instrumentation, see 07.85.Q)
41.60.Bq  Cherenkov radiation
41.60.Cr  Free-electron lasers
          (see also 52.75.M Free-electron devices--in plasma physics)

41.75.-i  Charged-particle beams
41.75.Ak  Positive-ion beams
41.75.Cn  Negative-ion beams
41.75.Fr  Electron and positron beams
41.75.Ht  Relativistic electron and positron beams
41.75.Lx  Advanced accelerator concepts

41.85.-p  Beam optics
          (see also 07.77 Atomic, molecular, and charged particle sources
          and detectors, 29.27 Beams in particle accelerators)
41.85.Ar  Beam extraction, beam injection
41.85.Ct  Beam shaping, beam splitting
41.85.Ew  Beam profile, beam intensity
41.85.Gy  Chromatic and geometrical aberrations
41.85.Ja  Beam transport
41.85.Lc  Beam focusing and bending magnets, wiggler magnets, and
          quadrupoles
          (see also 07.55.D--in instruments, for superconducting magnets,
          see 85.25.L)
41.85.Ne  Electrostatic lenses, septa
41.85.Qg  Beam analyzers, beam monitors, and Faraday cups
41.85.Si  Beam collimators, monochromators

41.90.+e  Other topics in electromagnetism; electron and ion optics

42.       Optics
          (for optical properties of gases, see 51.70; for optical
          properties of bulk materials and thin films, see 78.20)

42.15.-i  Geometrical optics
42.15.Dp  Wave fronts and ray tracing
42.15.Eq  Optical system design
42.15.Fr  Aberrations
42.15.Gs  Other topics in geometrical optics

42.25.-p  Wave optics
42.25.Bs  Wave propagation, transmission and absorption
          (see also 41.20.J--in electromagnetism; for propagation in
          atmosphere, see 42.68.A; see also 52.40.D, N--in plasma physics)
42.25.Fx  Diffraction and scattering
42.25.Gy  Edge and boundary effects; reflection and refraction
42.25.Hz  Interference
42.25.Ja  Polarization
42.25.Kb  Coherence
42.25.Lc  Birefringence
42.25.Md  Other topics in wave optics

42.30.-d  Imaging and optical processing
42.30.Kq  Fourier optics
42.30.Lr  Modulation and optical transfer functions
42.30.Ms  Speckle and moire patterns
42.30.Rx  Phase retrieval
42.30.Sy  Pattern recognition
42.30.Tz  Computer vision; robotic vision
42.30.Va  Image forming and processing
42.30.Wb  Image reconstruction; tomography
42.30.Yc  Other topics in imaging and optical processing

42.40.-i  Holography
42.40.Eq  Holographic optical elements; holographic gratings
42.40.Ht  Hologram recording and read-out methods
          (see also 42.70.L Holographic recording materials; optical
          storage media)
42.40.Jv  Computer-generated holograms
42.40.Kw  Holographic interferometry; other holographic techniques
          (see also 07.60.L Interferometers)
42.40.Lx  Diffraction efficiency, resolution, and other hologram
          characteristics
42.40.My  Applications
42.40.Pa  Volume holograms

42.50.-p  Quantum optics
          (for lasers, see 42.55 and 42.60; see also 42.65 Nonlinear
          optics, 03.65 Quantum mechanics)
42.50.Ar  Photon statistics and coherence theory
42.50.Ct  Quantum description of interaction of light and matter; related 
          experiments
42.50.Dv  Nonclassical field states; squeezed, antibunched, and sub-
          Poissonian states; operational definitions of the phase of the
          field; phase measurements
42.50.Fx  Cooperative phenomena; superradiance and superfluorescence
42.50.Gy  Effects of atomic coherence on propagation, absorption, and
          amplification of light
42.50.Hz  Strong-field excitation of optical transitions in quantum
          systems; multi-photon processes; dynamic Stark shift
          (for multiphoton ionization and excitation of atoms and
          molecules, see 32.80.R, and 33.80.R, respectively)
42.50.Lc  Quantum fluctuations, quantum noise, and quantum jumps
42.50.Md  Optical transient phenomena: quantum beats, photon echo, free-
          induction decay, dephasings and revivals, optical nutation, and
          self-induced transparency
......    Dynamics of nonlinear optical systems; optical instabilities,
          optical chaos, and optical spatio-temporal dynamics, see 42.65.S
......    Optical solitons; nonlinear guided waves, see 42.65.T
42.50.Vk  Mechanical effects of light on atoms, molecules, electrons, and
          ions
          (see also 32.80.P and 33.80.P Optical cooling and trapping of
          atoms and molecules, respectively)

......    Optical tests of fundamental laws and forces, see 12.20.F
          Experimental tests in quantum electrodynamics and 03.65.B Theory
          of measurements in quantum mechanics

42.55.-f  Lasers
42.55.Ah  General laser theory
42.55.Ks  Chemical lasers
          (for chemical laser kinetics, see 82.40.T)
42.55.Lt  Gas lasers including excimer and metal-vapor lasers
42.55.Mv  Dye lasers
42.55.Px  Semiconductor lasers; laser diodes
42.55.Rz  Doped-insulator lasers and other solid state lasers
42.55.Sa  Microcavity and microdisk lasers
42.55.Vc  X- and gamma-ray lasers
42.55.Wd  Fiber lasers
42.55.Xi  Diode-pumped lasers
42.55.Ye  Raman lasers
          (see also 42.65.D Stimulated Raman scattering; CARS)
......    Free-electron lasers, see 41.60.C

42.60.-v  Laser optical systems: design and operation
42.60.By  Design of specific laser systems
42.60.Da  Resonators, cavities, amplifiers, arrays, and rings
42.60.Fc  Modulation, tuning, and mode locking
42.60.Gd  Q-switching
42.60.Jf  Beam characteristics: profile, intensity, and power; spatial
          pattern formation
42.60.Lh  Efficiency, stability, gain, and other operational parameters
42.60.Mi  Dynamical laser instabilities; noisy laser behavior
42.60.Pk  Continuous operation
42.60.Rn  Relaxation oscillations and long pulse operation

......    Ultrashort pulse generation, see 42.65.T

......    Dynamics of nonlinear optical systems, see 42.65.S

42.62.-b  Laser applications
42.62.Be  Biological and medical applications
42.62.Cf  Industrial applications
42.62.Eh  Metrological applications
          (see also 06.20 Metrology, and 06.30 Measurements common to
          several branches of physics and astronomy)
42.62.Fi  Laser spectroscopy
42.62.Hk  Other applications

42.65.-k  Nonlinear optics
42.65.An  Optical susceptibility, hyperpolarizability
          (see also 33.15.M Electric and magnetic moments, polarizability
          and magnetic susceptibility of molecules)
42.65.Dr  Stimulated Raman scattering; CARS
42.65.Es  Stimulated Brillouin and Rayleigh scattering
42.65.Hw  Phase conjugation, optical mixing, and photorefractive effect
42.65.Jx  Beam trapping, self-focusing, and thermal blooming
42.65.Ky  Harmonic generation and frequency conversion
          (see also 42.79.N Optical frequency converters)
42.65.Pc  Optical bistability, multistability, and switching
          (see also 42.60.G Q-switching; 42.79.T Optical computers, logic
          elements, interconnects, switches; neural networks)
42.65.Re  Ultrafast processes; optical pulse generation and pulse
          compression
42.65.Sf  Dynamics of nonlinear optical systems; optical instabilities,
          optical chaos and complexity, and optical spatio-temporal 
          dynamics
42.65.Tg  Optical solitons; nonlinear guided waves
          (for solitons in fibers, see 42.81.D)
42.65.Vh  Other nonlinear optical phenomena
42.65.Wi  Nonlinear waveguides
42.65.Yj  Optical parametric oscillators and amplifiers

42.66.-p  Physiological optics
42.66.Ct  Anatomy and optics of eye
42.66.Ew  Physiology of eye; optic-nerve structure and function
42.66.Lc  Vision: light detection, adaptation, and discrimination
42.66.Ne  Color vision: color detection, adaptation, and discrimination
42.66.Qg  Scales for light and color detection
42.66.Si  Psychophysics of vision, visual perception; binocular vision

42.68.-w  Atmospheric optics
42.68.Ay  Propagation, transmission, attenuation, and radiative transfer
          (see also 92.60.T Interaction of atmosphere with electromagnetic
          waves; propagation)
42.68.Bz  Atmospheric turbulence effects
          (see also 92.60.E Convection, turbulence, and diffusion)
42.68.Ca  Spectral absorption by atmospheric gases
          (see also 94.10.G Absorption and scattering of radiation)
42.68.Ge  Effects of clouds and water
          (see also 92.60.J Water in the atmosphere; 92.60.N Cloud physics)
42.68.Jg  Effects of aerosols
          (see also 92.60.M Particles and aerosols)
42.68.Kh  Effects of air pollution
          (see also 92.60.S Air quality and air pollution)
42.68.Mj  Scattering, polarization
          (see also 94.10.G Absorption and scattering of radiation)
42.68.Sq  Image transmission and formation
42.68.Wt  Remote sensing; LIDAR and adaptive systems

42.70.-a  Optical materials
          (see also 81.05 specific materials: fabrication, treatment,
          testing and analysis)
42.70.Ce  Glasses, quartz
42.70.Df  Liquid crystals
          (for structure of liquid crystals, see 61.30)
42.70.Gi  Light-sensitive materials
42.70.Hj  Laser materials
42.70.Jk  Polymers and organics
42.70.Km  Infrared transmitting materials
42.70.Ln  Holographic recording materials; optical storage media
42.70.Mp  Nonlinear optical crystals
          (see also 77.84 Dielectric, piezoelectric, and ferroelectric
          materials)
42.70.Nq  Other nonlinear optical materials; photorefractive and
          semiconductor materials
42.70.Qs  Photonic bandgap materials

42.72.-g  Optical sources and standards
          (for lasers, see 42.55; see also 07.57.H in instruments)
42.72.Ai  Infrared sources
42.72.Bj  Visible and ultraviolet sources

42.79.-e  Optical elements, devices, and systems
          (for integrated optics, see 42.82; for fiber optics, see 42.81)
......    Optical instruments, equipment and techniques, see 07.60 and
          07.57
......    Optical spectrometers, see 07.57.T and 07.60.R
......    Photography, photographic instruments and techniques, see 07.68
......    Magnetooptical devices, see 85.70.S
42.79.Ag  Apertures, collimators
42.79.Bh  Lenses, prisms and mirrors
42.79.Ci  Filters, zone plates, and polarizers
42.79.Dj  Gratings
          (for holographic gratings, see 42.40.E)
42.79.Ek  Solar collectors and concentrators
          (see also 84.60.J Photoelectric conversion: solar cells and
          arrays)
42.79.Fm  Reflectors, beam splitters, and deflectors
42.79.Gn  Optical waveguides and couplers
          (for fiber waveguides and waveguides in integrated optics, see
          42.81.Q and 42.82.E, respectively)
42.79.Hp  Optical processors, correlators, and modulators
42.79.Jq  Acousto-optical devices
42.79.Kr  Display devices, liquid-crystal devices
          (see also 85.60.P Display systems)
42.79.Ls  Scanners, image intensifiers, and image converters
          (see also 85.60 Optoelectronic devices)
42.79.Mt  Schlieren devices
42.79.Nv  Optical frequency converters
42.79.Pw  Imaging detectors and sensors
          (see also 85.60.G Photodetectors)
42.79.Qx  Range finders, remote sensing devices; laser Doppler
          velocimeters, SAR, and LIDAR
          (see also 42.68.W Remote sensing; LIDAR and adaptive systems)
42.79.Ry  Gradient-index (GRIN) devices
          (for fiber GRIN devices, see 42.81.H)
42.79.Sz  Optical communication systems, multiplexers, and demultiplexers
42.79.Ta  Optical computers, logic elements, interconnects, switches;
          neural networks
42.79.Vb  Optical storage systems, optical disks
          (see also 42.40.H Hologram recording and readout methods)
42.79.Wc  Optical coatings
42.79.Yd  Other optical elements, devices, and systems

42.81.-i  Fiber optics
......    Fiber-optic instruments, see 07.60.V
42.81.Bm  Fabrication, cladding, and splicing
42.81.Cn  Fiber testing and measurement of fiber parameters
42.81.Dp  Propagation, scattering, and losses; solitons
42.81.Gs  Birefringence, polarization
42.81.Ht  Gradient-index (GRIN) fiber devices
42.81.Pa  Sensors, gyros
42.81.Qb  Fiber waveguides, couplers, and arrays
42.81.Wg  Other fiber-optical devices
          (for fiber lasers, see 42.55.W)

42.82.-m  Integrated optics
42.82.Bq  Design and performance testing of integrated-optical systems
42.82.Cr  Fabrication techniques; lithography, pattern transfer
          (see also 85.40 Microelectronics: LSI, VLSI, ULSI; integrated
          circuit fabrication technology)
42.82.Ds  Interconnects, including holographic interconnects
          (see also 42.79.T Optical computers, logic elements,
          interconnects, switches; neural networks)
42.82.Et  Waveguides, couplers, and arrays
          (for fiber waveguides, see 42.81.Q)
42.82.Fv  Hybrid systems
42.82.Gw  Other integrated-optical elements and systems

42.86.+b  Optical workshop techniques

42.87.-d  Optical testing techniques
42.87.Bg  Phase shifting interferometry
          (see also 07.60.L Interferometers)
42.87.Ch  Other optical testing techniques

42.88.+h  Radiation effects on optical elements, devices, and systems

42.90.+m  Other topics in optics

43.       Acoustics

43.20.+g  General linear acoustics
          (see also 03.40.K Waves and wave propagation: general
          mathematical aspects)

43.25.+y  Nonlinear acoustics, macrosonics

43.28.+h  Aeroacoustics, atmospheric sound
          (see also 92.60 Meteorology)

43.30.+m  Underwater sound
          (see also 92.10.V--in physics of oceans)

43.35.+d  Ultrasonics, quantum acoustics, and physical effects of sound

......    Phonons in crystal lattices, see 63.20

......    Acoustical properties of rocks and minerals, see 91.60.L

......    Sound waves in plasma, see 52.35.D

......    Low-temperature acoustics and sound in liquid helium, see 67

......    Acoustical properties of solids, see 62.65; for ultrasonic
          relaxation, see 62.80

......    Acoustic properties of thin films, see 68.60.B

......    Surface waves in liquids and solids, see 68.10 and 68.35.G

......    Acoustoelectric effects, see 72.50 and 73.50.R

......    Magnetoacoustic effects, oscillations, and resonance, see 72.55,
          73.50.R, and 75.80

......    Acoustic holography, see 43.60; for acoustooptical effects, see
          78.20.H

43.38.+n  Transduction; acoustical devices for the generation and
          reproduction of sound

43.40.+s  Structural acoustics and vibration

43.50.+y  Noise: its effects and control

43.55.+p  Architectural acoustics

43.58.+z  Acoustical measurements and instrumentation

43.60.+d  Acoustic signal processing

43.64.+r  Physiological acoustics

......    Biological effects of sound and ultrasound, see 87.51

43.66.+y  Psychological acoustics

43.70.+i  Speech production

43.71.+m  Speech perception

43.72.+q  Speech processing and communication systems

43.75.+a  Music and musical instruments

43.80.+p  Bioacoustics

43.90.+v  Other topics in acoustics

44.       Heat transfer, thermal and thermodynamic processes

44.10.+i  Heat conduction (models, phenomenological description)

44.25.+f  Convective and constrained heat transfer
          (see also 47.27.T Convection and heat transfer)

44.30.+v  Heat transfer in inhomogeneous media, in porous media, and
          through interfaces

44.40.+a  Radiative heat transfer

44.50.+f  Thermal properties of matter (phenomenology, experimental
          techniques)

44.60.+k  Thermodynamic processes (phenomenology, experimental techniques)

44.90.+c  Other topics in heat transfer, thermal and thermodynamic
          processes

46.       Classical mechanics
          (for mechanical properties of condensed matter, see 62; for
          rheology, see 83)

46.10.+z  Mechanics of discrete systems
          (see also 03.20--general mathematical aspects, 95.10.C Celestial
          mechanics)

......    Continuum mechanics, see 83.10.F

46.30.-i  Structural mechanics of shells, plates, and beams
46.30.Cn  Static elasticity
46.30.Lx  Static buckling and instability
46.30.My  Vibrations, aeroelasticity, hydroelasticity, mechanical waves,
          and shocks
46.30.Nz  Fracture mechanics, fatigue, and cracks
46.30.Pa  Friction, wear, adherence, hardness, mechanical contacts, and
          tribology
          (see also 81.40.P--in materials science)
46.30.Rc  Measurement methods and techniques

46.90.+s  Other topics in classical mechanics

47.       Fluid dynamics
          (for fluid dynamics of quantum fluids, see 67; see also 83
          Rheology)

47.10.+g  General theory
          (see also 03.40.G--in classical mechanics of continuous media,
          83.10--in rheology)

47.11.+j  Computational methods in fluid dynamics
          (see also 83.85.P Flow computation--in rheology; 02.70--in
          mathematical methods in physics)

47.15.-x  Laminar flows
47.15.Cb  Laminar boundary layers
47.15.Fe  Stability of laminar flows
47.15.Gf  Low-Reynolds-number (creeping) flows
47.15.Hg  Potential flows
47.15.Ki  Inviscid flows with vorticity
47.15.Pn  Laminar suspensions
47.15.Rq  Laminar flows in cavities

47.17.+e  Mechanical properties of fluids
          (see also 62.10 Mechanical properties of liquids)

47.20.-k  Hydrodynamic stability
47.20.Bp  Buoyancy-driven instability
47.20.Cq  Inviscid instability
47.20.Dr  Surface-tension-driven instability
47.20.Ft  Instability of shear flows
47.20.Gv  Viscous instability
47.20.Hw  Morphological instability; phase changes
          (see also 64 Equations of state, phase equilibria, and phase
          transitions)
47.20.Ky  Nonlinearity (including bifurcation theory)
47.20.Lz  Secondary instability
47.20.Ma  Interfacial instability
47.20.Pc  Receptivity
......    Chaotic phenomena, see 47.52 and 05.45

47.27.-i  Turbulent flows, convection, and heat transfer
47.27.Ak  Fundamentals
47.27.Cn  Transition to turbulence
47.27.Eq  Turbulence simulation and modeling
47.27.Gs  Isotropic turbulence; homogeneous turbulence
47.27.Jv  High-Reynolds-number turbulence
47.27.Lx  Wall-bounded thin shear flows
47.27.Nz  Boundary layer and shear turbulence
47.27.Pa  Thick shear flows
47.27.Qb  Turbulent diffusion
47.27.Rc  Turbulence control
47.27.Sd  Noise (turbulence generated)
47.27.Te  Convection and heat transfer
          (see also 44.25 in heat transfer, thermal and thermodynamic
          processes)
47.27.Vf  Wakes
47.27.Wg  Jets

47.32.-y  Rotational flow and vorticity
47.32.Cc  Vortex dynamics
47.32.Ff  Separated flows

47.35.+i  Hydrodynamic waves

47.37.+q  Hydrodynamic aspects of superfluidity
          (see also 67.40.H and 67.57.D--in quantum fluids and solids)

47.40.-x  Compressible flows; shock and detonation phenomena
          (see also 28.70 Nuclear explosions, 52.35.T Shock waves in
          plasma, 83.50.T--in rheology)
47.40.Dc  General subsonic flows
47.40.Hg  Transonic flows
47.40.Ki  Supersonic and hypersonic flows
47.40.Nm  Shock-wave interactions and shock effects
          (for shock-wave initiated chemical reactions, see 82.40.F)

47.45.-n  Rarefied gas dynamics
47.45.Dt  Free molecular flows
47.45.Gx  Slip flows
47.45.Nd  Accommodation

47.50.+d  Non-Newtonian fluid flows
          (see also 83.50 Deformation, material flow)

47.52.+j  Chaos
          (see also 05.45 Theoretical models of chaotic systems; 83.50.W
          Chaotic flows; drag reduction)

47.53.+n  Fractals

47.54.+r  Pattern selection; pattern formation

47.55.-t  Nonhomogeneous flows
47.55.Bx  Cavitation
47.55.Dz  Drops and bubbles
47.55.Hd  Stratified flows
......    Rotational flows, see 47.32
47.55.Kf  Multiphase and particle-laden flows
47.55.Mh  Flows through porous media
          (for heat transfer in porous media, see 44.30)

47.60.+i  Flows in ducts, channels, nozzles, and conduits
          (see also 83.10 and 83.50--in rheology)

......    Biological fluid dynamics, see 87.45

47.62.+q  Flow control

47.65.+a  Magnetohydrodynamics and electrohydrodynamics
          (for MHD in plasma, see 52.30)

47.70.-n  Reactive, radiative, or nonequilibrium flows
47.70.Fw  Chemically reactive flows
          (see also 83.80.J Chemically reactive materials--in rheology)
47.70.Mc  Radiation gas dynamics
47.70.Nd  Nonequilibrium gas dynamics

47.75.+f  Relativistic fluid dynamics
          (for astrophysical aspects, see 95.30.L and 95.30.Q)

47.80.+v  Instrumentation for fluid dynamics
          (see also 83.85--in rheology; 07.30 Vacuum apparatus and
          techniques)

47.90.+a  Other topics in fluid dynamics

50.       PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES
          (for flow properties of gases, see 47; for atomic and molecular
          properties, see 30)

51.       Physics of gases

51.10.+y  Kinetic and transport theory of gases

51.20.+d  Viscosity, diffusion, and thermal conductivity

51.30.+i  Thermodynamic properties, equations of state

51.35.+a  Mechanical properties; compressibility

51.40.+p  Acoustical properties
          (see also 43.28 Aeroacoustics, atmospheric sound)

51.50.+v  Electrical properties (ionization, breakdown, electron and ion
          mobility, etc.)
          (see also 52.80 Electric discharges)

51.60.+a  Magnetic properties

51.70.+f  Optical and dielectric properties

......    Sorption, see 82.65.M, and 68.45.D

......    Gas-surface interactions, see 82.65.P

......    Gas sensors and detectors, see 07.07.D

51.90.+r  Other topics in the physics of gases

52.       Physics of plasmas and electric discharges
          (for astrophysical plasmas, see 95.30.Q; for physics of the
          ionosphere and magnetosphere, see 94.20 and 94.30)

52.20.-j  Elementary processes in plasma
52.20.Dq  Particle orbits
52.20.Fs  Electron collisions
52.20.Hv  Atomic, molecular, ion, and heavy-particle collisions

52.25.-b  Plasma properties
          (for chemical reactions in plasma, see 82.40.R)
52.25.Dg  Plasma kinetic equations
52.25.Fi  Transport properties
52.25.Gj  Fluctuation phenomena
          (for plasma turbulence, see 52.35.R)
52.25.Jm  Ionization of plasmas
52.25.Kn  Thermodynamics of plasmas
52.25.Mq  Dielectric properties
52.25.Nr  Emission, absorption, and scattering of X and gamma radiation
52.25.Qt  Emission, absorption, and scattering of ultraviolet radiation
52.25.Rv  Emission, absorption, and scattering of visible and infrared
          radiation
52.25.Sw  Emission, absorption, and scattering of radio-wave and microwave
          radiation
52.25.Tx  Emission, absorption, and scattering of particles
52.25.Vy  Impurities in plasmas
52.25.Wz  Nonneutral plasmas
52.25.Ya  Neutrals in plasma

52.30.-q  Plasma flow; magnetohydrodynamics
          (see also 47.65--in fluid dynamics; for MHD generators, see
          52.75.F)
52.30.Bt  MHD equilibria
52.30.Jb  Resistive MHD effects

52.35.-g  Waves, oscillations, and instabilities in plasma
52.35.Bj  Magnetohydrodynamic waves
52.35.Dm  Sound waves
52.35.Fp  Electrostatic waves and oscillations (e.g., ion-acoustic waves)
52.35.Hr  Electromagnetic waves (e.g., electron-cyclotron, Whistler,
          Bernstein, upper hybrid, lower hybrid)
52.35.Kt  Drift waves
52.35.Lv  Other linear waves
52.35.Mw  Nonlinear waves and nonlinear wave propagation (including
          parametric effects, mode coupling, ponderomotive effects, etc.)
52.35.Nx  Other nonlinear interactions and phenomena (e.g., Brillouin
          scattering and Rayleigh scattering)
52.35.Py  Plasma macroinstabilities (hydromagnetic, e.g., kink, fire-hose,
          mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-
          Taylor, etc.)
52.35.Qz  Plasma microinstabilities (ion-acoustic, two-stream, loss-cone,
          beam-plasma, drift, ion- or electron-cyclotron, etc.)
52.35.Ra  Plasma turbulence
52.35.Sb  Solitons; BGK modes
52.35.Tc  Shock waves

52.40.-w  Plasma interactions
52.40.Db  Electromagnetic (nonlaser) radiation interactions with plasma
52.40.Fd  Plasma interactions with antennas; plasma-filled waveguides
52.40.Hf  Plasma-wall interactions; boundary layer effects; plasma sheaths
52.40.Mj  Particle beam interactions in plasma
52.40.Nk  Laser-plasma interactions (e.g., anomalous absorption,
          backscattering, magnetic field generation, fast particle
          generation)

52.50.-b  Plasma production and heating
52.50.Dg  Plasma sources
......    Electric discharges, see 52.80
52.50.Gj  Plasma heating (beam injection, radio-frequency and microwave,
          ohmic, ICR, ECR, and current drive heating)
52.50.Jm  Plasma production and heating by laser beams
52.50.Lp  Plasma production and heating by shock waves and compression

52.55.-s  Magnetic confinement and equilibrium
52.55.Dy  General theory and basic studies of plasma lifetime, particle and
          heat loss, energy balance, etc.
52.55.Ez  Z-Pinch, theta pinch, and other pinch devices
52.55.Fa  Tokamaks
52.55.Hc  Stellarators, spheromaks, compact tori, bumpy tori, and other
          toroidal confinement devices
52.55.Jd  Magnetic mirrors
52.55.Lf  Astron, cusp, and other magnetic traps
52.55.Pi  Fusion products effects (e.g., alpha-particles, etc.)

52.58.-c  Nonmagnetic confinement
52.58.Ei  Light-ion inertial confinement
52.58.Hm  Heavy-ion inertial confinement
52.58.Ns  Other inertial confinement (including laser)
52.58.Qv  Electrostatic, high frequency, and other nonmagnetic confinement

52.60.+h  Relativistic plasma

52.65.-y  Plasma simulation
52.65.Cc  Particle orbit and trajectory
52.65.Ff  Fokker-Planck equation
52.65.Kj  Magnetohydrodynamic and fluid equation
52.65.Pp  Monte Carlo methods
52.65.Rr  Particle-in-cell method
52.65.Tt  Gyrofluid and gyrokinetic simulations

52.70.-m  Plasma diagnostic techniques and instrumentation
52.70.Ds  Electric and magnetic measurements
52.70.Gw  Radio-frequency and microwave measurements
52.70.Kz  Optical (ultraviolet, visible, infrared) measurements
52.70.La  X-ray and gamma-ray measurements
52.70.Nc  Particle measurements

52.75.-d  Plasma devices and applications
          (see also 28.52 Fusion reactors; for ion sources, see 29.25.L, N;
          for plasma sources, see 52.50.D)
52.75.Di  Accelerators and propulsion
52.75.Fk  Magnetohydrodynamic generators and thermionic convertors; plasma
          diodes
          (see also 84.60.L, N in direct energy conversion and storage)
52.75.Hn  Plasma torches
52.75.Kq  Plasma switches (e.g., spark gaps)
52.75.Ms  Free-electron devices
          (for free-electron lasers, see 41.60.C)
52.75.Pv  High-voltage diodes
          (for high-current and high-voltage technology, see 84.70)
52.75.Rx  Plasma applications in manufacturing and materials processing
          (etching, surface cleaning, spraying, arc welding, ion
          implantation, film deposition, etc.)
52.75.Va  Devices for generation of coherent radiation

52.80.-s  Electric discharges
          (see also 51.50 Electrical properties of gases)
52.80.Dy  Low-field and Townsend discharges
52.80.Hc  Glow; corona
52.80.Mg  Arcs; sparks; lightning
52.80.Pi  High-frequency discharges
52.80.Qj  Explosions; exploding wires
52.80.Sm  Magnetoactive discharges (e.g., Penning discharges)
52.80.Tn  Other gas discharges
52.80.Vp  Discharge in vacuum
52.80.Wq  Discharge in liquids
          (for electric breakdown in liquids, see 77.22.J)
52.80.Yr  Discharges for spectral sources (including inductively coupled
          plasma)

52.90.+z  Other topics in physics of plasmas and electric discharges

60.       CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES

61.       Structure of solids and liquids; crystallography
          (for surface, interface, and thin film structure, see 68)

61.10.-i  X-ray diffraction and scattering
          (for x-ray diffractometers, see 07.85.J, for x-ray studies of
          crystal defects, see 61.72.D, F)
61.10.Dp  Theories of diffraction and scattering
61.10.Eq  X-ray scattering (including small-angle scattering)
61.10.Ht  X-ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc.
61.10.Kw  X-ray reflectometry (surfaces, interfaces, films)
61.10.Nz  Single-crystal and powder diffraction
61.10.Yh  Other x-ray techniques for structure analysis

61.12.-q  Neutron diffraction and scattering
61.12.Bt  Theories of diffraction and scattering
61.12.Ex  Neutron scattering techniques (including small-angle scattering)
61.12.Ha  Neutron reflectometry
61.12.Ld  Single-crystal and powder diffraction
61.12.Yp  Other neutron diffraction and scattering techniques for structure
          analysis

61.14.-x  Electron diffraction and scattering
          (for electron diffractometers, see 07.65)
61.14.Dc  Theories of diffraction and scattering
61.14.Hg  Low-energy electron diffraction (LEED) and reflection high-energy
          electron diffraction (RHEED)
61.14.Lj  Convergent-beam electron diffraction, selected-area electron
          diffraction, nanodiffraction
61.14.Nm  Electron holography
61.14.Qp  X-ray photoelectron diffraction
61.14.Rq  Other electron diffraction and scattering techniques for
          structure analysis

61.16.-d  Electron, ion, and scanning probe microscopy
          (for electron microscopy of crystal defects, see 61.72.F)
61.16.Bg  Transmission, reflection and scanning electron microscopy
          (including EBIC)
61.16.Ch  Scanning probe microscopy: scanning tunneling, atomic force,
          scanning optical, magnetic force, etc.
61.16.Fk  Field emission and field-ion microscopy
......    EPR and NMR methods for defect structures, see 61.72.H
61.16.Ms  Scanning Auger microscopy, photoelectron microscopy
61.16.Yc  Other electron, ion and scanning probe microscopies

61.18.-j  Other methods of structure determination
61.18.Bn  Atom, molecule, and ion scattering
61.18.Fs  Magnetic resonance techniques; Moessbauer spectroscopy

61.20.-p  Structure of liquids
61.20.Gy  Theory and models of liquid structure
61.20.Ja  Computer simulation of liquid structure
61.20.Lc  Time-dependent properties; relaxation
          (for glass transitions, see 64.70.P)
61.20.Ne  Structure of simple liquids
61.20.Qg  Structure of associated liquids: electrolytes, molten salts, etc.

61.25.-f  Studies of specific liquid structures
61.25.Bi  Liquid noble gases
61.25.Em  Molecular liquids
61.25.Hq  Macromolecular and polymer solutions; polymer melts; swelling
61.25.Mv  Liquid metals and alloys

61.30.-v  Liquid crystals
          (for phase transitions in liquid crystals, see 64.70.M)
61.30.Cz  Theory and models of liquid crystal structure
61.30.Eb  Experimental determinations of smectic, nematic, cholesteric, and
          other structures
61.30.Gd  Orientational order of liquid crystals; electric and magnetic
          field effects on order
61.30.Jf  Defects in liquid crystals

61.41.+e  Polymers, elastomers, and plastics
          (for materials synthesis, treatments, testing and analysis, see
          81.05.L; for rheology of polymers, see 83; for biopolymers, see
          87.15)

61.43.-j  Disordered solids
61.43.Bn  Structural modeling: serial-addition models, computer simulation
61.43.Dq  Amorphous semiconductors, metals, and alloys
61.43.Er  Other amorphous solids
61.43.Fs  Glasses
61.43.Gt  Powders, porous materials
61.43.Hv  Fractals; macroscopic aggregates (including diffusion-limited
          aggregates)

61.44.-n  Semi-periodic solids
61.44.Br  Quasicrystals
61.44.Fw  Incommensurate crystals

61.46.+w  Clusters, nanoparticles, and nanocrystalline materials
          (see also 36.40 Atomic and molecular clusters)

61.48.+c  Fullerenes and fullerene-related materials

61.50.-f  Crystalline state
61.50.Ah  Theory of crystal structure, crystal symmetry; calculations and
          modeling
......    Crystal growth, see 81.10
61.50.Ks  Crystallographic aspects of phase transformations; pressure
          effects
          (see also 81.30.H)
61.50.Lt  Crystal binding; cohesive energy
61.50.Nw  Crystal stoichiometry

61.66.-f  Structure of specific crystalline solids
          (for surface structure, see 68.35.B)
61.66.Bi  Elemental solids
61.66.Dk  Alloys
61.66.Fn  Inorganic compounds
61.66.Hq  Organic compounds
......    Quantum crystals, see 67.80.C

61.68.+n  Crystallographic databases

61.72.-y  Defects and impurities in crystals; microstructure
          (for radiation induced defects, see 61.80; for defects in
          surfaces, interfaces and thin films, see 68.35.D and 68.55.L; see
          also 85.40.R Impurity doping, diffusion and ion implantation
          technology)
61.72.Bb  Theories and models of crystal defects
61.72.Cc  Kinetics of defect formation and annealing
61.72.Dd  Experimental determination of defects by diffraction and
          scattering
61.72.Ff  Direct observation of dislocations and other defects (etch pits,
          decoration, electron microscopy, x-ray topography, etc.)
61.72.Hh  Indirect evidence of dislocations and other defects (resistivity,
          slip, creep, strains, internal friction, EPR, NMR, etc.)
61.72.Ji  Point defects (vacancies, interstitials, color centers, etc.) and
          defect clusters
61.72.Lk  Linear defects: dislocations, disclinations
61.72.Mm  Grain and twin boundaries
61.72.Nn  Stacking faults and other planar or extended defects
61.72.Qq  Microscopic defects (voids, inclusions, etc.)
61.72.Ss  Impurity concentration, distribution, and gradients
          (for impurities in thin films, see 68.55.L; see also 66.30.J
          Diffusion of impurities)
61.72.Tt  Doping and impurity implantation in germanium and silicon
61.72.Vv  Doping and impurity implantation in III-V and II-VI
          semiconductors
61.72.Ww  Doping and impurity implantation in other materials
61.72.Yx  Interaction between different crystal defects; gettering effect

61.80.-x  Physical radiation effects, radiation damage
          (for chemical radiation effects, see 82.50)
......    Radiation treatments, see 81.40.W
61.80.Az  Theory and models of radiation effects
61.80.Ba  Ultraviolet, visible, and infrared radiation effects (including
          laser radiation)
61.80.Cb  X-ray effects
61.80.Ed  gamma ray effects
61.80.Fe  Electrons and positron radiation effects
61.80.Hg  Neutron radiation effects
61.80.Jh  Ion radiation effects
          (for ion implantation, see 61.72.T, V, W)
61.80.Lj  Atom and molecule irradiation effects
......    Channeling, blocking, and energy loss of particles, see 61.85

61.82.-d  Radiation effects on specific materials
61.82.Bg  Metals and alloys
61.82.Fk  Semiconductors
61.82.Ms  Insulators
61.82.Pv  Polymers, organic compounds
61.82.Rx  Nanocrystalline materials

61.85.+p  Channeling phenomena (blocking, energy loss, etc.)

61.90.+d  Other topics in structure of solids and liquids

62.       Mechanical and acoustical properties of condensed matter
          (for mechanical and acoustical properties of interfaces and thin
          films, see 68.35.G, 68.45.N and 68.60.B; for mechanical
          properties related to treatment conditions, see 81.70.J, L, N;
          for mechanical properties of rocks and minerals, see 91.60)

62.10.+s  Mechanical properties of liquids
          (for viscosity of liquids, see 66.20)

62.20.-x  Mechanical properties of solids
62.20.Dc  Elasticity, elastic constants
62.20.Fe  Deformation and plasticity (including yield, ductility, and
          superplasticity)
          (see also 83.50 Deformation; material flow)
62.20.Hg  Creep
62.20.Mk  Fatigue, brittleness, fracture, and cracks
62.20.Qp  Tribology and hardness
          (for tribology and hardness of shells, plates, and beams, see
          46.30.P; see also 83.50.L in rheology)

62.30.+d  Mechanical and elastic waves; vibrations
          (see also 43.40 Structural acoustics and vibration)

62.40.+i  Anelasticity, internal friction, stress relaxation, and
          mechanical resonances
          (see also 81.40.J Elasticity and anelasticity)

......    Thermomechanical effects, see 65.70

......    Magnetomechanical effects, see 75.80

......    Piezoelectric effects, see 77.65

......    Elastooptical effects, see 78.20.H

62.50.+p  High-pressure and shock-wave effects in solids and liquids
          (for high pressure apparatus and techniques, see 07.35)

62.60.+v  Acoustical properties of liquids

......    Lattice dynamics, phonons, see 63

......    Second sound in quantum fluids, see 67.40.P

62.65.+k  Acoustical properties of solids

......    Magnetoacoustic effects, see 72.55 and 73.50.R

......    Acoustoelectric effects, see 72.50, 73.50.R, and 77.65.D

......    Acoustooptical effects, see 78.20.H

62.80.+f  Ultrasonic relaxation
          (for ultrasonic attenuation in superconductors, see 74.25.L)

62.90.+k  Other topics in mechanical and acoustical properties of condensed
          matter

63.       Lattice dynamics
          (see also 78.30 Infrared and Raman spectra; for surface and
          interface vibrations, see 68.35.J and 68.45.K)

63.10.+a  General theory

63.20.-e  Phonons in crystal lattices
          (for phonons in superconductors, see 74.25.K)
63.20.Dj  Phonon states and bands, normal modes, and phonon dispersion
63.20.Kr  Phonon-electron and phonon-phonon interactions
63.20.Ls  Phonon interactions with other quasiparticles
63.20.Mt  Phonon-defect interactions
63.20.Pw  Localized modes
63.20.Ry  Anharmonic lattice modes

63.22.+m  Phonons in low-dimensional structures and small particles

63.50.+x  Vibrational states in disordered systems

63.70.+h  Statistical mechanics of lattice vibrations and displacive phase
          transitions

63.90.+t  Other topics in lattice dynamics

64.       Equations of state, phase equilibria, and phase transitions
          (see also 82.60 Chemical thermodynamics)

64.10.+h  General theory of equations of state and phase equilibria
          (see also 05.70.C Thermodynamic functions and equations of state)

64.30.+t  Equations of state of specific substances

64.60.-i  General studies of phase transitions
          (see also 63.75 Statistical mechanics of lattice vibrations and
          displacive phase transitions; for critical phenomena in solid
          surfaces and interfaces, and in magnetism, see 68.35.R, and
          75.40, respectively)
64.60.Ak  Renormalization-group, fractal, and percolation studies of phase
          transitions
          (see also 61.43.H Fractals; macroscopic aggregates)
64.60.Cn  Order-disorder transformations; statistical mechanics of model
          systems
64.60.Fr  Equilibrium properties near critical points, critical exponents
64.60.Ht  Dynamic critical phenomena
64.60.Kw  Multicritical points
64.60.Lx  Self-organized criticality; avalanche effect
64.60.My  Metastable phases
64.60.Qb  Nucleation
          (see also 82.60.N Thermodynamics of nucleation in physical
          chemistry)

64.70.-p  Specific phase transitions
64.70.Dv  Solid-liquid transitions
64.70.Fx  Liquid-vapor transitions
64.70.Hz  Solid-vapor transitions
64.70.Ja  Liquid-liquid transitions
64.70.Kb  Solid-solid transitions
          (see also 61.50.K Crystallographic aspects of phase
          transformations, pressure effects; 75.30.K and 77.80.B for
          magnetic and ferroelectric transitions, respectively; for
          material science aspects, see 81.30)
64.70.Md  Transitions in liquid crystals
64.70.Pf  Glass transitions
64.70.Rh  Commensurate-incommensurate transitions

64.75.+g  Solubility, segregation, and mixing; phase separation
          (see also 82.60.L Thermodynamics of solutions)

64.90.+b  Other topics in equations of state, phase equilibria, and phase
          transitions

65.       Thermal properties of condensed matter
          (see also 05.70 Thermodynamics and 44 Heat transfer, thermal and
          thermodynamic processes; for thermodynamic properties of quantum
          fluids and solids, see 67; for thermal properties of thin films,
          see 68.60.D; for nonelectronic thermal conduction, see 66.60,
          66.70, and 72.15; for thermal properties of rocks and minerals,
          see 91.60)

65.20.+w  Heat capacities of liquids

65.40.+g  Heat capacities of solids
          (for specific heat of superconductors, see 74.25.B; for specific
          heat of magnetic systems, see 75.40.C)

65.50.+m  Thermodynamic properties and entropy

65.70.+y  Thermal expansion and density changes; thermomechanical effects

65.90.+i  Other topics in thermal properties of condensed matter

66.       Transport properties of condensed matter (nonelectronic)

66.10.-x  Diffusion and ionic conduction in liquids
66.10.Cb  Diffusion and thermal diffusion
          (for osmosis, see also 82.65.F)
66.10.Ed  Ionic conduction

66.20.+d  Viscosity of liquids; diffusive momentum transport

66.30.-h  Diffusion in solids
          (for surface and interface diffusion, see 68.35.F)
66.30.Dn  Theory of diffusion and ionic conduction in solids
66.30.Fq  Self-diffusion in metals, semimetals, and alloys
66.30.Hs  Self-diffusion and ionic conduction in nonmetals
66.30.Jt  Diffusion of impurities
66.30.Lw  Diffusion of other defects
66.30.Ny  Chemical interdiffusion; diffusion barriers
66.30.Qa  Electromigration

66.35.+a  Quantum tunneling of defects

66.60.+a  Thermal conduction in nonmetallic liquids
          (for thermal conduction in liquid metals, see 72.15.C)

66.70.+f  Nonelectronic thermal conduction and heat-pulse propagation in
          solids; thermal waves
          (for thermal conduction in metals and alloys, see 72.15.C and
          72.15.E)

66.90.+r  Other topics in nonelectronic transport properties of condensed
          matter

67.       Quantum fluids and solids; liquid and solid helium
          (see also 05.30 Quantum statistical mechanics)

67.20.+k  Quantum effects on the structure and dynamics of nondegenerate
          fluids (e.g., normal phase liquid [supon]4[supoff]He)

67.40.-w  Boson degeneracy and superfluidity of [supon]4[supoff]He
67.40.Bz  Phenomenology and two-fluid models
67.40.Db  Quantum statistical theory; ground state, elementary excitations
67.40.Fd  Dynamics of relaxation phenomena
67.40.Hf  Hydrodynamics in specific geometries, flow in narrow channels
67.40.Jg  Ions in liquid [supon]4[supoff]He
67.40.Kh  Thermodynamic properties
67.40.Mj  First sound
67.40.Pm  Transport processes, second and other sounds, and thermal
          counterflow; Kapitza resistance
67.40.Rp  Films and weak link transport
67.40.Vs  Vortices and turbulence
67.40.Yv  Impurities and other defects

67.55.-s  Normal phase of liquid [supon]3[supoff]He
67.55.Cx  Thermodynamic properties
67.55.Fa  Hydrodynamics
67.55.Hc  Transport properties
67.55.Ig  Ions in normal liquid [supon]3[supoff]He
67.55.Jd  Collective modes
67.55.Lf  Impurities

67.57.-z  Superfluid phase of liquid [supon]3[supoff]He
67.57.Bc  Thermodynamic properties
67.57.De  Superflow and hydrodynamics
67.57.Fg  Textures and vortices
67.57.Gh  Ions in superfluid [supon]3[supoff]He
67.57.Hi  Transport properties
67.57.Jj  Collective modes
67.57.Lm  Spin dynamics
67.57.Np  Behavior near interfaces
67.57.Pq  Impurities

67.60.-g  Mixed systems; liquid [supon]3[supoff]He, [supon]4[supoff]He
          mixtures
67.60.Dm  He I-[supon]3[supoff]He
67.60.Fp  He II-[supon]3[supoff]He
67.60.Hr  Dilute superfluid [supon]3[supoff]He in He II
67.60.Js  Ions in liquid [supon]3[supoff]He-[supon]4[supoff]He mixtures

67.65.+z  Spin-polarized hydrogen and helium

67.70.+n  Films (including physical adsorption)

67.80.-s  Solid helium and related quantum crystals
67.80.Cx  Structure, lattice dynamics, and sound propagation
67.80.Gb  Thermal properties
67.80.Jd  Magnetic properties and nuclear magnetic resonance
67.80.Mg  Defects, impurities, and diffusion

67.90.+z  Other topics in quantum fluids and solids; liquid and solid
          helium

68.       Surfaces and interfaces; thin films and whiskers (structure and
          nonelectronic properties)

68.10.-m  Fluid surfaces and fluid-fluid interfaces
68.10.Cr  Surface energy (surface tension, interface tension, angle of
          contact, etc.)
68.10.Et  Interface elasticity, viscosity, and viscoelasticity
68.10.Gw  Interface activity, spreading
68.10.Jy  Kinetics (evaporation, adsorption, condensation, catalysis, etc.)
          (see also 82.65 Surface and interface chemistry)

68.15.+e  Liquid thin films

68.18.+p  Langmuir-Blodgett films
          (for methods of film deposition, see 81.15.L)

68.35.-p  Solid surfaces and solid-solid interfaces
68.35.Bs  Surface structure and topography
68.35.Ct  Interface structure and roughness
68.35.Dv  Composition; defects and impurities
68.35.Fx  Diffusion; interface formation
          (see also 66.30 Diffusion in solids)
68.35.Gy  Mechanical and acoustical properties; adhesion
68.35.Ja  Surface and interface dynamics and vibrations
68.35.Md  Surface energy; thermodynamic properties
          (see also 82.65.D Thermodynamics of surfaces and interfaces)
68.35.Rh  Phase transitions and critical phenomena
68.35.Wm  Other nonelectronic properties
......    heat transfer through interfaces, see 44.30

68.45.-v  Solid-fluid interfaces
68.45.Da  Adsorption and desorption kinetics; evaporation and condensation
          (for chemisorption, see 82.65.M)
68.45.Gd  Wetting
68.45.Kg  Dynamics; vibrations
68.45.Nj  Mechanical and acoustical properties
68.45.Ws  Other nonelectronic properties

68.55.-a  Thin film structure and morphology
          (for methods of thin film deposition, film growth and epitaxy,
          see 81.15)
68.55.Jk  Structure and morphology; thickness
68.55.Ln  Defects and impurities: doping, implantation, distribution,
          concentration, etc.
          (for diffusion of impurities, see 66.30)
68.55.Nq  Composition and phase identification

68.60.-p  Physical properties of thin films, nonelectronic
68.60.Bs  Mechanical and acoustical properties
68.60.Dv  Thermal stability; thermal effects
68.60.Wm  Other nonelectronic physical properties

68.65.+g  Low-dimensional structures (superlattices, quantum well
          structures, multilayers): structure, and nonelectronic properties

......    Growth of low-dimensional structures, see 81.15

68.70.+w  Whiskers and dendrites (growth, structure, and nonelectronic
          properties)

68.90.+g  Other topics in structure, and nonelectronic properties of
          surfaces and interfaces; thin films and whiskers

70.       CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND
          OPTICAL PROPERTIES

71.       Electronic structure
          (see also 73.20 Surface and interface electron states)

71.10.-w  Theories and models of many electron systems
71.10.Ay  Fermi-liquid theory and other phenomenological models
71.10.Ca  Electron gas, Fermi gas
71.10.Fd  Lattice fermion models (Hubbard model, etc.)
71.10.Hf  Non-Fermi-liquid ground states, electron phase diagrams and phase
          transitions in model systems
71.10.Li  Excited states and pairing interactions in model systems
71.10.Pm  Fermions in reduced dimensions (anyons, composite fermions,
          Luttinger liquid, etc.)
          (for anyon mechanism in superconductors, see 74.20.M)

71.15.-m  Methods of electronic structure calculations
71.15.Ap  Plane-wave methods (including augmented plane-wave method)
71.15.Cr  Scattering methods
71.15.Fv  Atomic- and molecular-orbital methods (including tight binding
          approximation, valence-band method, etc.)
71.15.Hx  Pseudopotential method
71.15.La  Atomic sphere approximation methods
71.15.Mb  Density functional theory, local density approximation
71.15.Nc  Total energy and cohesive energy calculations
71.15.Pd  Molecular dynamics calculations (Car-Parrinello) and other
          numerical simulations
71.15.Rf  Relativistic effects
71.15.Th  Other methods

71.18.+y  Fermi surface: calculations and measurements; effective mass, g
          factor

71.20.-b  Electron density of states and band structure of crystalline
          solids
          (for electronic structure of superconductors, see 74.25.J)
71.20.Be  Transition metals and alloys
71.20.Dg  Alkali and alkaline earth metals
71.20.Eh  Rare earth metals and alloys
71.20.Gj  Other metals and alloys
71.20.Lp  Intermetallic compounds
71.20.Mq  Elemental semiconductors
71.20.Nr  Semiconductor compounds
71.20.Ps  Other inorganic compounds
71.20.Rv  Polymers and organic compounds
71.20.Tx  Fullerenes and related materials; intercalation compounds

......    Photonic band-gap materials, see 42.70.Q

71.22.+i  Electronic structure of liquid metals and semiconductors and
          their alloys

71.23.-k  Electronic structure of disordered solids
71.23.An  Theories and models; localized states
71.23.Cq  Amorphous semiconductors, metallic glasses, glasses
71.23.Ft  Quasicrystals

71.24.+q  Electronic structure of clusters and nanoparticles

71.27.+a  Strongly correlated electron systems; heavy fermions

71.28.+d  Narrow-band systems; intermediate-valence solids
          (for magnetic aspects, see 75.20.H and 75.30.M)

71.30.+h  Metal-insulator transitions and other electronic transitions

71.35.-y  Excitons and related phenomena
71.35.Aa  Frenkel excitons and self-trapped excitons
71.35.Cc  Intrinsic properties of excitons; optical absorption spectra
71.35.Ee  Electron-hole drops and electron-hole plasma
71.35.Gg  Exciton-mediated interactions
71.35.Ji  Excitons in magnetic fields; magnetoexcitons
71.35.Lk  Collective effects (Bose effects, phase space filling, and
          excitonic phase transitions)

71.36.+c  Polaritons (including photon-phonon and photon-magnon
          interactions)

71.38.+i  Polarons and electron-phonon interactions
          (see also 63.20.K Phonon-electron interactions in lattices)

71.45.-d  Collective effects
71.45.Gm  Exchange, correlation, dielectric and magnetic functions,
          plasmons
71.45.Lr  Charge-density-wave systems
          (see also 75.30.F Spin-density waves)

......    Localized states, see 71.23.A

71.55.-i  Impurity and defect levels
71.55.Ak  Metals, semimetals, and alloys
71.55.Cn  Elemental semiconductors
71.55.Eq  III-V semiconductors
71.55.Gs  II-VI semiconductors
71.55.Ht  Other nonmetals
71.55.Jv  Disordered structures; amorphous and glassy solids

71.60.+z  Positron states
          (see also 78.70.B Positron annihilation)

71.70.-d  Level splitting and interactions
          (see also 73.20 Surface and interface electron states, 75.30.E
          Exchange and superexchange interactions)
71.70.Ch  Crystal and ligand fields
71.70.Di  Landau levels
71.70.Ej  Spin-orbit coupling, Zeeman and Stark splitting
71.70.Fk  Strain-induced splitting
71.70.Gm  Exchange interactions
71.70.Jp  Nuclear states and interactions
71.70.Ms  Other bulk localized states and interactions
          (for surface states, see 73.20)

71.90.+q  Other topics in electronic structure

72.       Electronic transport in condensed matter
          (for electronic transport in surfaces, interfaces, and thin
          films, see 73; for thermal conduction in nonmetallic liquids, see
          66.60; for electrical properties related to treatment conditions,
          see 81.40.R)

72.10.-d  Theory of electronic transport; scattering mechanisms
72.10.Bg  General formulation of transport theory
72.10.Di  Scattering by phonons, magnons, and other nonlocalized
          excitations
          (see also 71.45 Collective effects)
72.10.Fk  Scattering by point defects, dislocations, surfaces, and other
          imperfections (including Kondo effect)

72.15.-v  Electronic conduction in metals and alloys
72.15.Cz  Electrical and thermal conduction in amorphous and liquid metals
          and alloys
72.15.Eb  Electrical and thermal conduction in crystalline metals and
          alloys
72.15.Gd  Galvanomagnetic and other magnetotransport effects
          (for giant magnetoresistance, see 75.70.P)
72.15.Jf  Thermoelectric and thermomagnetic effects
72.15.Lh  Relaxation times and mean free paths
72.15.Nj  Collective modes (e.g., in one-dimensional conductors)
72.15.Qm  Scattering mechanisms and Kondo effect
          (see also 75.20.H Local moments in compounds and alloys; Kondo
          effect, valence fluctuations, heavy fermions)
72.15.Rn  Quantum localization

72.20.-i  Conductivity phenomena in semiconductors and insulators
          (see also 66.70 Nonelectronic thermal conduction in solids)
72.20.Dp  General theory, scattering mechanisms
72.20.Fr  Low-field transport and mobility; piezoresistance
72.20.Ht  High-field and nonlinear effects
72.20.Jv  Charge carriers: generation, recombination, lifetime, and
          trapping
72.20.My  Galvanomagnetic and other magnetotransport effects
72.20.Pa  Thermoelectric and thermomagnetic effects

72.30.+q  High-frequency effects; plasma effects

72.40.+w  Photoconduction and photovoltaic effects

72.50.+b  Acoustoelectric effects

72.55.+s  Magnetoacoustic effects
          (see also 75.80 Magnetomechanical effects)

72.60.+g  Mixed conductivity and conductivity transitions

72.70.+m  Noise processes and phenomena

72.80.-r  Conductivity of specific materials
          (for conductivity of metals and alloys, see 72.15)
72.80.Cw  Elemental semiconductors
72.80.Ey  III-V and II-VI semiconductors
72.80.Ga  Transition-metal compounds
72.80.Jc  Other crystalline inorganic semiconductors
72.80.Le  Polymers; organic compounds (including organic semiconductors)
72.80.Ng  Disordered solids
72.80.Ph  Liquid semiconductors
72.80.Rj  Fullerenes and related materials
72.80.Sk  Insulators
72.80.Tm  Composite materials

72.90.+y  Other topics in electronic transport in condensed matter

73.       Electronic structure and electrical properties of surfaces,
          interfaces, and thin films
          (for electronic structure and electrical properties of
          superconducting films, see 74.25 and 74.76)

73.20.-r  Surface and interface electron states
73.20.At  Surface states, band structure, electron density of states
73.20.Dx  Electron states in low-dimensional structures (superlattices,
          quantum well structures and multilayers)
73.20.Fz  Weak localization effects (e.g., quantized states)
73.20.Hb  Impurity and defect levels; energy states of adsorbed species
73.20.Jc  Delocalization processes
73.20.Mf  Collective excitations (including plasmons and other charge-
          density excitations)

73.23.-b  Mesoscopic systems
73.23.Ad  Ballistic transport
73.23.Hk  Coulomb blockade; single-electron tunneling
73.23.Ps  Other electronic properties of mesoscopic systems

73.25.+i  Surface conductivity and carrier phenomena

73.30.+y  Surface double layers, Schottky barriers, and work functions

73.40.-c  Electronic transport in interface structures
73.40.Cg  Contact resistance, contact potential
73.40.Ei  Rectification
73.40.Gk  Tunneling
73.40.Hm  Quantum Hall effect (integer and fractional)
73.40.Jn  Metal-to-metal contacts
73.40.Kp  III-V semiconductor-to-semiconductor contacts, p-n junctions, and
          heterojunctions
73.40.Lq  Other semiconductor-to-semiconductor contacts, p-n junctions, and
          heterojunctions
73.40.Mr  Semiconductor-electrolyte contacts
73.40.Ns  Metal-nonmetal contacts
73.40.Qv  Metal-insulator-semiconductor structures (including
          semiconductor-to-insulator)
73.40.Rw  Metal-insulator-metal structures
73.40.Sx  Metal-semiconductor-metal structures
73.40.Ty  Semiconductor-insulator- semiconductor structures
73.40.Vz  Semiconductor-metal- semiconductor structures

73.50.-h  Electronic transport phenomena in thin films
73.50.Bk  General theory, scattering mechanisms
73.50.Dn  Low-field transport and mobility; piezoresistance
73.50.Fq  High-field and nonlinear effects
73.50.Gr  Charge carriers: generation, recombination, lifetime, trapping,
          mean free paths
73.50.Jt  Galvanomagnetic and other magnetotransport effects (including
          thermomagnetic effects)
73.50.Lw  Thermoelectric effects
73.50.Mx  High-frequency effects; plasma effects
73.50.Pz  Photoconduction and photovoltaic effects
73.50.Rb  Acoustoelectric and magnetoacoustic effects
73.50.Td  Noise processes and phenomena
73.50.Yg  Other thin film transport-related topics

73.61.-r  Electrical properties of specific thin films and layer structures
          (multilayers, superlattics, quantum wells, wires, and dots)
          (for optical properties of thin films, see 78.20 and 78.66; for
          magnetic properties of thin films, see 75.70)
73.61.At  Metal and metallic alloys
73.61.Cw  Elemental semiconductors
73.61.Ey  III-V semiconductors
73.61.Ga  II-VI semiconductors
73.61.Jc  Amorphous semiconductors; glasses
73.61.Le  Other inorganic semiconductors
73.61.Ng  Insulators
73.61.Ph  Polymers; organic compounds
73.61.Tm  Nanocrystalline materials
73.61.Wp  Fullerenes

73.90.+f  Other topics in electronic structure and electrical properties of
          surfaces, interfaces, and thin films

74.       Superconductivity

74.10.+v  Occurrence, potential candidates

74.20.-z  Theories and models of superconducting state
74.20.De  Phenomenological theories (two-fluid, Ginzburg-Landau, etc.)
74.20.Fg  BCS theory and its development
74.20.Mn  Nonconventional mechanisms (spin fluctuations, polarons and
          bipolarons, resonating valence bond model, anyon mechanism,
          marginal Fermi liquid, Luttinger liquid, etc.)

74.25.-q  General properties; correlations between physical properties in
          normal and superconducting states
74.25.Bt  Thermodynamic properties
74.25.Dw  Superconductivity phase diagrams
74.25.Fy  Transport properties (electric and thermal conductivity,
          thermoelectric effects, etc.)
74.25.Gz  Optical properties
74.25.Ha  Magnetic properties
74.25.Jb  Electronic structure
74.25.Kc  Phonons
74.25.Ld  Mechanical and acoustical properties, elasticity, and ultrasonic
          attenuation
74.25.Nf  Response to electromagnetic fields (nuclear magnetic resonance,
          surface impedance, etc.)

74.40.+k  Fluctuations (noise, chaos, nonequilibrium superconductivity,
          localization, etc.)

74.50.+r  Proximity effects, weak links, tunneling phenomena, and Josephson
          effects

74.55.+h  Type-I superconductivity

74.60.-w  Type-II superconductivity
74.60.Ec  Mixed state, critical fields, and surface sheath
74.60.Ge  Flux pinning, flux creep, and flux-line lattice dynamics
74.60.Jg  Critical currents

74.62.-c  Transition temperature variations
74.62.Bf  Effects of material synthesis, crystal structure, and chemical
          composition
74.62.Dh  Effects of crystal defects, doping and substitution
74.62.Fj  Pressure effects
74.62.Yb  Other effects

74.70.-b  Superconducting materials (excluding high-T[subon]c[suboff]
          compounds)
74.70.Ad  Metals; alloys and compounds: A15, C15, Chevrel and Laves phases
          (Nb-based alloys, carbides, nitrides, ternary molybdenum
          chalcogenides, etc.)
74.70.Kn  Organic superconductors
74.70.Tx  Heavy-fermion superconductors
74.70.Wz  Fullerenes and related materials

74.72.-h  High-T[subon]c[suboff] compounds
74.72.Bk  Y-based cuprates
74.72.Dn  La-based cuprates
74.72.Fq  Tl-based cuprates
74.72.Gr  Hg-base cuprates
74.72.Hs  Bi-based cuprates
74.72.Jt  Other cuprates
74.72.Ny  Quaternary and multinary borocarbides
74.72.Yg  Other compounds

74.76.-w  Superconducting films
74.76.Bz  High-T[subon]c[suboff] films
74.76.Db  Other superconducting films

74.80.-g  Spatially inhomogeneous structures
74.80.Bj  Granular, melt-textured, and amorphous superconductors; powders
74.80.Dm  Superconducting layer structures: superlattices, heterojunctions,
          and multilayers
74.80.Fp  Point contacts; SN and SNS junctions

......    Superconducting devices, see 85.25

74.90.+n  Other topics in superconductivity

75.       Magnetic properties and materials
          (for magnetic properties related to treatment conditions, see
          81.40.R; for magnetic properties of rocks and minerals, see
          91.60.P)

75.10.-b  General theory and models of magnetic ordering
          (see also 05.50 Ising problems)
75.10.Dg  Crystal-field theory and spin Hamiltonians
75.10.Hk  Classical spin models
75.10.Jm  Quantized spin models
75.10.Lp  Band and itinerant models
75.10.Nr  Spin-glass and other random models

75.20.-g  Diamagnetism and paramagnetism
75.20.Ck  Nonmetals
75.20.En  Metals and alloys
75.20.Hr  Local moment in compounds and alloys; Kondo effect, valence
          fluctuations, heavy fermions
          (see also 72.15.Q Scattering mechanisms and Kondo effect in
          electronic conduction of metals and alloys)

75.25.+z  Spin arrangements in magnetically ordered materials (including
          neutron and spin-polarized electron studies, synchrotron-source
          x-ray scattering, etc.)

75.30.-m  Intrinsic properties of magnetically ordered materials
          (for critical point effects, see 75.40)
75.30.Cr  Saturation moments and magnetic susceptibilities
75.30.Ds  Spin waves
          (for spin-wave resonance, see 76.50)
75.30.Et  Exchange and superexchange interactions
          (see also 71.70 Level splitting and interactions)
75.30.Fv  Spin-density waves
75.30.Gw  Magnetic anisotropy
75.30.Hx  Magnetic impurity interactions
75.30.Kz  Magnetic phase boundaries (including magnetic transitions,
          metamagnetism, etc.)
75.30.Mb  Valence fluctuation, Kondo lattice, and heavy-fermion phenomena
          (see also 71.27 Strongly correlated electron systems, heavy
          fermions)
75.30.Pd  Surface magnetism
75.30.Sg  Magnetocaloric effect

75.40.-s  Critical-point effects, specific heats, short-range order
          (see also 65.40 Heat capacities of solids)
75.40.Cx  Static properties (order parameter, static susceptibility, heat
          capacities, critical exponents, etc.)
75.40.Gb  Dynamic properties (dynamic susceptibility, spin waves, spin
          diffusion, dynamic scaling, etc.)
75.40.Mg  Numerical simulation studies

75.45.+j  Macroscopic quantum phenomena in magnetic systems

75.50.-y  Studies of specific magnetic materials
75.50.Bb  Fe and its alloys
75.50.Cc  Other ferromagnetic metals and alloys
75.50.Dd  Nonmetallic ferromagnetic materials
75.50.Ee  Antiferromagnetics
75.50.Gg  Ferrimagnetics
75.50.Kj  Amorphous and nanocrystalline magnetic materials; quasicrystals
75.50.Lk  Spin glasses and other random magnets
75.50.Mm  Magnetic liquids
75.50.Pp  Magnetic semiconductors
75.50.Ss  Magnetic recording materials
          (see also 85.70 Magnetic devices)
75.50.Tt  Fine-particle systems
75.50.Vv  High coercivity materials
75.50.Ww  Permanent magnets

75.60.-d  Domain effects, magnetization curves, and hysteresis
75.60.Ch  Domain walls and domain structure
          (for magnetic bubbles, see 75.70.K)
75.60.Ej  Magnetization curves, hysteresis, Barkhausen and related effects
75.60.Lr  Magnetic aftereffects
75.60.Nt  Magnetic annealing and temperature-hysteresis effects

75.70.-i  Magnetic films and multilayers
75.70.Ak  Magnetic properties of monolayers and thin films
75.70.Cn  Interfacial magnetic properties (multilayers, magnetic quantum
          wells, superlattices, magnetic heterostructures)
75.70.Kw  Domain structure (including magnetic bubbles)
75.70.Pa  Giant magnetoresistance

75.80.+q  Magnetomechanical and magnetoelectric effects, magnetostriction

......    Galvanomagnetic effects, see 72.15.G and 72.20.M

......    Magnetooptical effects, see 78.20.L

75.90.+w  Other topics in magnetic properties and materials

76.       Magnetic resonances and relaxations in condensed matter,
          Moessbauer effect

76.20.+q  General theory of resonances and relaxations

76.30.-v  Electron paramagnetic resonance and relaxation
          (see also 33.35 electron resonance and relaxation in atomic and
          molecular physics)
76.30.Da  Ions and impurities: general
76.30.Fc  Iron group (3d) ions and impurities (Ti-Cu)
76.30.He  Platinum and palladium group (4d and 5d) ions and impurities (Zr-
          Ag and Hf-Au)
76.30.Kg  Rare-earth ions and impurities
76.30.Lh  Other ions and impurities
76.30.Mi  Color centers and other defects
76.30.Pk  Conduction electrons
76.30.Rn  Free radicals

76.40.+b  Diamagnetic and cyclotron resonances

76.50.+g  Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances;
          spin-wave resonance
          (see also 75.30.D Spin waves)

76.60.-k  Nuclear magnetic resonance and relaxation
          (see also 33.25 Nuclear resonance and relaxation in atomic and
          molecular physics)
76.60.Cq  Chemical and Knight shifts
76.60.Es  Relaxation effects
76.60.Gv  Quadrupole resonance
76.60.Jx  Effects of internal magnetic fields
76.60.Lz  Spin echoes
76.60.Pc  NMR imaging
          (for medical NMR imaging, see 87.59.P)

76.70.-r  Magnetic double resonances and cross effects
          (see also 33.40 multiple resonances in atomic and molecular
          physics)
76.70.Dx  Electron-nuclear double resonance (ENDOR), electron double
          resonance (ELDOR)
76.70.Fz  Double nuclear magnetic resonance (DNMR), dynamical nuclear
          polarization
76.70.Hb  Optically detected magnetic resonance (ODMR)

76.75.+i  Muon spin rotation and relaxation

76.80.+y  Moessbauer effect; other gamma-ray spectroscopy
          (see also 33.45 Moessbauer spectra--in atomic and molecular
          physics)

......    Magnetic resonance spectrometers, 07.57.P

76.90.+d  Other topics in magnetic resonances and relaxations

77.       Dielectrics, piezoelectrics, and ferroelectrics and their
          properties
          (for conductivity phenomena, see 72.20 and 72.80; for dielectric
          properties related to treatment conditions, see 81.40.T)

77.22.-d  Dielectric properties of solids and liquids
77.22.Ch  Permittivity (dielectric function)
77.22.Ej  Polarization and depolarization
77.22.Gm  Dielectric loss and relaxation
77.22.Jp  Dielectric breakdown and space-charge effects

77.55.+f  Dielectric thin films

77.65.-j  Piezoelectricity and electrostriction
77.65.Bn  Piezoelectric and electrostrictive constants
77.65.Dq  Acoustoelectric effects and surface acoustic waves (SAW) in
          piezoelectrics
77.65.Fs  Electromechanical resonance; quartz resonators
77.65.Ly  Strain-induced piezoelectric fields

77.70.+a  Pyroelectric and electrocaloric effects

77.80.-e  Ferroelectricity and antiferroelectricity
77.80.Bh  Phase transitions and Curie point
77.80.Dj  Domain structure; hysteresis
77.80.Fm  Switching phenomena

77.84.-s  Dielectric, piezoelectric, and ferroelectric materials
          (for nonlinear optical materials, see 42.70)
77.84.Bw  Elements, oxides, nitrides, borides, carbides, chalcogenides,
          etc.
77.84.Dy  Niobates, titanates, tantalates, PZT ceramics, etc.
77.84.Fa  KDP- and TGS-type crystals
77.84.Jd  Polymers; organic compounds
77.84.Lf  Composite materials
77.84.Nh  Liquids, emulsions, and suspensions; liquid crystals

77.90.+k  Other topics in dielectrics, piezoelectrics, and ferroelectrics
          and their properties

78.       Optical properties, condensed-matter spectroscopy and other
          interactions of radiation and particles with condensed matter

78.20.-e  Optical properties of bulk materials and thin films
          (for optical properties related to materials treatment, see
          81.40.T; for optical materials, see 42.70; for optical properties
          of rocks and minerals, see 91.60.M)
78.20.Bh  Theory, models, and numerical simulation
78.20.Ci  Optical constants: refractive index, complex dielectric constant,
          absorption, reflection and transmission coefficients, emissivity
78.20.Ek  Optical activity
78.20.Fm  Birefringence
78.20.Hp  Piezo-, elasto-, acoustooptical, and photoacoustic effects
78.20.Jq  Electrooptical effects
78.20.Ls  Magnetooptical effects
78.20.Nv  Thermooptical and photothermal effects
......    Nonlinear optical properties, see 42.65
78.20.Wc  Other optical properties

78.30.-j  Infrared and Raman spectra
          (for vibrational states in crystals and disordered systems, see
          63.20 and 63.50 respectively)
78.30.Am  Elemental semiconductors and insulators
78.30.Cp  Liquids
78.30.Er  Solid metals and alloys
78.30.Fs  III-V and II-VI semiconductors
78.30.Hv  Other nonmetallic inorganics
78.30.Jw  Organic solids, polymers
78.30.Ly  Disordered solids
78.30.Na  Fullerenes and related materials

78.35.+c  Brillouin and Rayleigh scattering; other light scattering
          (for Raman scattering, see 78.30)

78.40.-q  Absorption and reflection spectra: visible and ultraviolet
          (for infrared spectra, see 78.30)
78.40.Dw  Liquids
78.40.Fy  Semiconductors
78.40.Ha  Other nonmetallic inorganics
78.40.Kc  Metals, semimetals, and alloys
78.40.Me  Organic solids and polymers
78.40.Pg  Disordered solids
78.40.Ri  Fullerenes and related materials

78.45.+h  Stimulated emission
          (see also 42.55 Lasers)

78.47.+p  Time-resolved optical spectroscopies and other ultrafast optical
          measurements in condensed matter
          (see also 42.65.R--in nonlinear optics)

......    Impurity and defect absorption in solids, see 78.30 and 78.40

78.55.-m  Photoluminescence
78.55.Ap  Elemental semiconductors
78.55.Bq  Liquids
78.55.Cr  III-V semiconductors
78.55.Et  II-VI semiconductors
78.55.Fv  Solid alkali halides
78.55.Hx  Other solid inorganic materials
78.55.Kz  Solid organic materials
78.55.Mb  Porous materials

78.60.-b  Other luminescence and radiative recombination
78.60.Fi  Electroluminescence
78.60.Hk  Cathodoluminescence, ionoluminescence
78.60.Kn  Thermoluminescence
78.60.Mq  Sonoluminescence, triboluminescence
78.60.Ps  Chemiluminescence
          (see also 82.40.T Chemiluminescence and chemical laser kinetics)
78.60.Ya  Other luminescence (including radiation-induced)

......    Photoconduction and photovoltaic effects, see 72.40 and 73.50.P

78.66.-w  Optical properties of specific thin films, surfaces, and low-
          dimensional structures: superlattices, quantum well structures,
          multilayers, and microparticles
78.66.Bz  Metals and metallic alloys
78.66.Db  Elemental semiconductors and insulators
78.66.Fd  III-V semiconductors
78.66.Hf  II-VI semiconductors
78.66.Jg  Amorphous semiconductors; glasses; nanocrystalline materials
78.66.Li  Other semiconductors
78.66.Nk  Insulators
78.66.Qn  Polymers; organic compounds
78.66.Sq  Composite materials
78.66.Tr  Fullerenes and related materials
78.66.Vs  Microparticles

78.70.-g  Interactions of particles and radiation with matter
78.70.Bj  Positron annihilation
          (see also 71.60 Positron states)
78.70.Ck  X-ray scattering
78.70.Dm  X-ray absorption spectra
78.70.En  X-ray emission spectra and fluorescence
78.70.Gq  Microwave and radio-frequency interactions
78.70.Nx  Neutron inelastic scattering

78.90.+t  Other topics in optical properties, condensed matter spectroscopy
          and other interactions of particles and radiation with condensed
          matter

79.       Electron and ion emission by liquids and solids; impact phenomena

79.20.-m  Impact phenomena (including electron spectra and sputtering)
79.20.Ap  Theory of impact phenomena; numerical simulation
79.20.Ds  Laser-beam impact phenomena
79.20.Fv  Electron impact: Auger emission
79.20.Hx  Electron impact: secondary emission
79.20.Kz  Other electron-impact emission phenomena
79.20.La  Photon- and electron-stimulated desorption
79.20.Mb  Positron emission
79.20.Rf  Atomic, molecular, and ion beam impact and interactions with
          surfaces

......    Ion implantation, see 61.72.T, V, W

......    Electron and ion channeling, see 61.85

......    X-ray spectra, see 78.70.E

79.40.+z  Thermionic emission

79.60.-i  Photoemission and photoelectron spectra
79.60.Bm  Clean metal, semiconductor, and insulator surfaces
79.60.Dp  Adsorbed layers and thin films
79.60.Fr  Polymers; organic compounds
79.60.Ht  Disordered structures
79.60.Jv  Interfaces; heterostructures; nanostructures

79.70.+q  Field emission, ionization, evaporation, and desorption

79.75.+g  Exoelectron emission

79.90.+b  Other topics in electron and ion emission by liquids and solids
          and impact phenomena

80.       CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND
          TECHNOLOGY

81.       Materials science

81.05.-t  Specific materials: fabrication, treatment, testing and analysis
......    Superconducting materials, see 74.70 and 74.72
......    Magnetic materials, see 75.50
......    Optical materials, see 42.70
......    Dielectric, piezoelectric, and ferroelectric materials, see 77.80
......    Colloids, gels, and emulsions, see 82.70.D, G, K respectively
......    Biological materials, see 87
81.05.Bx  Metals, semimetals, and alloys
81.05.Cy  Elemental semiconductors
81.05.Dz  II-VI semiconductors
81.05.Ea  III-V semiconductors
81.05.Gc  Amorphous semiconductors
81.05.Hd  Other semiconductors
81.05.Je  Ceramics and refractories (including borides, carbides, hydrides,
          nitrides, oxides, and silicides)
81.05.Kf  Glasses (including metallic glasses)
81.05.Lg  Polymers and plastics; rubber; synthetic and natural fibers;
          organometallic and organic materials
81.05.Mh  Cermets, ceramic and refractory composites
81.05.Ni  Dispersion-, fiber-, and platelet-reinforced metal-based
          composites
81.05.Pj  Glass-based composites, vitroceramics
81.05.Qk  Reinforced polymers and polymer-based composites
81.05.Rm  Porous materials; granular materials
81.05.Tp  Fullerenes and related materials; diamonds, graphite
81.05.Ys  Nanophase materials
81.05.Zx  New materials: theory, design, and fabrication

81.10.-h  Methods of crystal growth; physics of crystal growth
          (for crystal structure, see 61)
81.10.Aj  Theory and models of crystal growth; physics of crystal growth,
          crystal morphology and orientation
81.10.Bk  Growth from vapor
81.10.Dn  Growth from solutions
81.10.Fq  Growth from melts; zone melting and refining
81.10.Jt  Growth from solid phases (including multiphase diffusion and
          recrystallization)
81.10.Mx  Growth in microgravity environments

81.15.-z  Methods of deposition of films and coatings; film growth and
          epitaxy
          (for structure of thin films, see 68.55; see also 85.40.S
          Deposition technology)
81.15.Cd  Deposition by sputtering
81.15.Ef  Vacuum deposition
81.15.Fg  Laser deposition
81.15.Gh  Chemical vapor deposition (including plasma-enhanced CVD, MOCVD,
          etc.)
81.15.Hi  Molecular, atomic, ion, and chemical beam epitaxy
81.15.Jj  Ion and electron beam-assisted deposition; ion plating
81.15.Kk  Vapor phase epitaxy
81.15.Lm  Liquid phase epitaxy; deposition from liquid phases (melts,
          solutions, and surface layers on liquids)
81.15.Np  Solid phase epitaxy; growth from solid phases
81.15.Pq  Electrodeposition, electroplating
81.15.Rs  Spray coating techniques
81.15.Tv  Other methods of film growth and epitaxy

81.20.-n  Methods of materials synthesis and materials processing
          (for ion implantation and doping, see 61.72)
......    Crystal growth, see 81.10
......    Film deposition, film growth and epitaxy, see 81.15
......    Plasma applications in manufacturing and materials processing,
          see 52.75.R
81.20.Ev  Powder processing: powder metallurgy, compaction, sintering,
          mechanical alloying, and granulation
81.20.Fw  Sol-gel processing, precipitation
81.20.Hy  Forming; molding, extrusion etc.
81.20.Ka  Chemical synthesis; combustion synthesis
......    Chemical vapor deposition, see 81.15.G
81.20.Rg  Aerosols in materials synthesis and processing
81.20.Vj  Joining; welding
81.20.Wk  Machining, milling
81.20.Ym  Purification
81.20.Zx  Other methods of materials synthesis and materials processing

81.30.-t  Phase diagrams and microstructures developed by solidification
          and solid-solid phase transformations
          (see also 64.70.K Solid-solid transitions)
81.30.Bx  Phase diagrams of metals and alloys
81.30.Dz  Phase diagrams of other materials
          (for phase diagrams of superconductors, see 74.25.D)
81.30.Fb  Solidification
81.30.Hd  Constant-composition solid-solid phase transformations:
          polymorphic, massive, and order-disorder
81.30.Kf  Martensitic transformations
81.30.Mh  Solid-phase precipitation
          (see also 64.75 Solubility, segregation, and mixing; phase
          separation)

......    Granular materials, see 81.05.R

81.40.-z  Treatment of materials and its effects on microstructure and
          properties
81.40.Cd  Solid solution hardening, precipitation hardening, and dispersion
          hardening; aging
81.40.Ef  Cold working, work hardening; annealing, post-deformation
          annealing, quenching, tempering recovery, and crystallization
81.40.Gh  Other heat and thermomechanical treatments
81.40.Jj  Elasticity and anelasticity, stress-strain relations
81.40.Lm  Deformation, plasticity, and creep
          (see also 83.50--in rheology)
81.40.Np  Fatigue, corrosion fatigue, embrittlement, cracking, fracture and
          failure
81.40.Pq  Friction, lubrication, and wear
81.40.Rs  Electrical and magnetic properties (related to treatment
          conditions)
81.40.Tv  Optical and dielectric properties (related to treatment
          conditions)
81.40.Vw  Pressure treatment
          (see also 62.50.P High-pressure and shock-wave effects in solids
          and liquids)
81.40.Wx  Radiation treatment (particle and electromagnetic)
          (see also 61.80 Physical radiation effects, radiation damage)

......    Etching, corrosion, oxidation, and other surface treatments, see
          81.65

81.65.-b  Surface treatments
          (see also 85.40 Microelectronics: LSI, VLSI, ULSI; integrated
          circuit fabrication technology)
81.65.Cf  Surface cleaning, etching, patterning
81.65.Kn  Corrosion protection
81.65.Lp  Surface hardening: nitridation, carburization, carbonitridation
81.65.Mq  Oxidation
81.65.Ps  Polishing
81.65.Rv  Passivation
81.65.Tx  Gettering
81.65.Ya  Other surface treatments

81.70.-q  Methods of materials testing and analysis
          (for specific chemical analysis methods, see 82.80)
81.70.Bt  Mechanical testing, impact tests, static and dynamic loads
81.70.Cv  Nondestructive testing: ultrasonic testing, photoacoustic testing
81.70.Ex  Nondestructive testing: electromagnetic testing, eddy-current
          testing
81.70.Fy  Nondestructive testing: optical methods
81.70.Ha  Testing in microgravity environments
81.70.Jb  Chemical composition analysis, chemical depth and dopant
          profiling
81.70.Pg  Thermal analysis, differential thermal analysis (DTA),
          differential thermogravimetric analysis
81.70.Yp  Other methods of materials testing and analysis

81.90.+c  Other topics in materials science

82.       Physical chemistry
          (for physical chemistry of solutions of biomolecules, see
          87.10.D)

82.20.-w  Chemical kinetics
          (see also 31.15 Calculations and mathematical techniques in
          atomic and molecular physics and 31.25 Electronic correlation
          calculations for atoms and molecules)
82.20.Db  Statistical theories (including transition state)
82.20.Fd  Stochastic and trajectory models, other theories and models
82.20.Hf  Mechanisms and product distribution
82.20.Kh  Potential energy surfaces for chemical reactions
          (for potential energy surfaces for collisions, see 34.20.M)
82.20.Mj  Nonequilibrium kinetics
82.20.Pm  Rate constants, reaction cross sections, and activation energies
82.20.Rp  Energy distribution and transfer; relaxation
          (see also 31.70.H Time-dependent phenomena--in atomic and
          molecular physics)
82.20.Tr  Kinetic and isotope effects
82.20.Wt  Computational modeling; simulation

82.30.-b  Specific chemical reactions; reaction mechanisms
82.30.Cf  Atom and radical reactions; chain reactions
82.30.Eh  Molecule-molecule reactions
82.30.Fi  Ion-molecule, ion-ion, and charge-transfer reactions
          (see also 34.70 Charge transfer in atomic and molecular
          collisions)
82.30.Hk  Chemical exchanges (substitution, atom transfer, abstraction,
          disproportionation, and group exchange)
82.30.Lp  Decomposition reactions (pyrolysis, dissociation, and group
          ejection)
82.30.Nr  Association, addition, insertion, cluster formation, hydrogen
          bonding
82.30.Qt  Isomerization and rearrangement
82.30.Vy  Homogeneous catalysis
          (for heterogeneous catalysis at surfaces, see 82.65.J)

82.35.+t  Polymer reactions and polymerization

82.40.-g  Chemical kinetics and reactions: special regimes and techniques
......    Chemically reactive flows, see 47.70.F
82.40.Bj  Oscillations, chaos, and bifurcations in homogeneous
          nonequilibrium reactors
82.40.Ck  Pattern formation in vortices-diffusion systems
          (see also 47.54 Pattern selection and 47.32.C Vortex dynamics)
82.40.Dm  Atomic and molecular beam reactions
82.40.Fp  Shock waves
          (see also 47.40.N Shock-wave interactions and shock effects)
82.40.Js  Fast and ultrafast reactions
82.40.Mw  Pulse techniques
82.40.Py  Flames, combustion, and explosions
82.40.Ra  Plasma reactions (including flowing afterglow and electric
          discharges)
          (see also 81.15.G Chemical vapor deposition)
82.40.Tc  Chemiluminescence and chemical laser kinetics
          (see also 78.60.P Chemiluminescence in optical properties of
          condensed matter)
82.40.We  Atmospheric chemistry
          (see also 94.10.F Atmospheric composition, chemical reactions and
          processes)

82.45.+z  Electrochemistry and electrophoresis
          (see also 66.10.E Ionic conduction; for electroosmosis, see
          82.65.F; for electrochemical processes in biological membranes,
          see 87.22.F)

82.50.-m  Photochemistry and radiation chemistry
          (for photochemical reactions of biomolecules, see 87.15.R)
82.50.Fv  Photolysis, photodissociation, and photoionization by infrared,
          visible, and ultraviolet radiation
82.50.Gw  Radiolysis, dissociation, and ionization by x-ray, gamma-ray, and
          particle radiation

82.55.+e  Radiochemistry (including hot atom reactions, positronium and
          muonium chemistry)
          (see also 23 Radioactive decay and in-beam spectroscopy)

82.60.-s  Chemical thermodynamics
          (see also 05.70 Thermodynamics)
82.60.Cx  Enthalpies of combustion, reaction, and formation
82.60.Fa  Heat capacities and heats of phase transitions
82.60.Hc  Chemical equilibria and equilibrium constants
82.60.Lf  Thermodynamics of solutions
82.60.Nh  Thermodynamics of nucleation
          (see also 64.60.Q Nucleation--in equations of state, phase
          equilibria and phase transitions)

82.65.-i  Surface and interface chemistry
          (see also 68.35.M Surface energy; thermodynamic properties)
82.65.Dp  Thermodynamics of surfaces and interfaces
82.65.Fr  Film and membrane processes: ion exchange, dialysis, osmosis,
          electroosmosis
82.65.Jv  Heterogeneous catalysis at surfaces
          (for homogeneous catalysis, see 82.30.V)
82.65.My  Chemisorption
          (see also 68.45 Solid-fluid interfaces)
82.65.Pa  Surface-enhanced molecular states and other gas-surface
          interactions
          (see also 34.50.D Interactions of atoms, molecules, and their
          ions with surfaces; photon and electron emission; neutralization
          of ions)
82.65.Yh  Other surface and interface chemical processes

82.70.-y  Disperse systems
82.70.Dd  Colloids
82.70.Gg  Gels and sols
82.70.Kj  Emulsions and suspensions
82.70.Rr  Aerosols and foams

82.80.-d  Chemical analysis and related physical methods of analysis
          (for related instrumentation, see 07; for biochemical analytic
          techniques, see 87.64)
82.80.Bg  Chromatography
82.80.Ch  Ultraviolet, visible, infrared, Raman, microwave, and magnetic
          resonance spectroscopic analysis methods; spectrophotometry;
          colorimetry
82.80.Ej  X-ray, Moessbauer, and other gamma-ray spectroscopic analysis
          methods
82.80.Fk  Electrochemical methods
82.80.Jp  Activation analysis and other radiochemical methods
82.80.Kq  Energy-conversion spectro-analytical methods (e.g.,
          photoacoustic, photothermal, and optogalvanic spectroscopic
          methods)
82.80.Ms  Mass spectrometry (including SIMS, multiphoton ionization and
          resonance ionization mass spectrometry)
82.80.Pv  Electron spectroscopy (x-ray photoelectron (XPS), Auger electron
          spectroscopy(AES), etc.)
82.80.Sy  Methods using colligative properties
82.80.Yc  Rutherford backscattering (RBS), and other methods of chemical
          analysis

82.90.+j  Other topics in physical chemistry

83.       Rheology
          (see also 47 Fluid dynamics)

83.10.-y  Fundamentals and general
83.10.Bb  Kinematics of deformation and flow
83.10.Dd  Dynamics of continuous media
83.10.Ff  Continuum mechanics
83.10.Hh  Flow of solids
83.10.Ji  Fluid dynamics (nonlinear fluids)
83.10.Lk  Multiphase flows
83.10.Nn  Polymer dynamics
83.10.Pp  Particle dynamics

83.20.-d  Constitutive relations
83.20.Bg  Macroscopic (phenomenological) theories
83.20.Di  Microscopic (molecular) theories
83.20.Fk  Reptation theories
83.20.Hn  Structural and phase changes
83.20.Jp  Computer simulation
83.20.Lr  Boundary conditions

83.50.-v  Deformation; material flow
83.50.Ax  Steady shear flows
83.50.By  Transient deformation and flow; time-dependent properties: start-
          up, stress relaxation, creep, recovery, etc.
83.50.Cz  Injection molding
83.50.Da  Compression molding
83.50.Eb  Weissenberg effect
83.50.Fc  Linear viscoelasticity
83.50.Gd  Nonlinear viscoelasticity
83.50.Jf  Extensional and combined flows
83.50.Lh  Interfacial and free surface flows; slip
83.50.Nj  Viscoplasticity; yield stress
83.50.Pk  Effects of electric and magnetic fields
83.50.Qm  Thixotropy; thickening flows
83.50.Sp  Thermorheological properties; non-isothermal rheology
83.50.Tq  Wave propagation, shocks, fracture, and crack healing
83.50.Vr  Wave speed
83.50.Ws  Chaotic flows; drag reduction
83.50.Yt  Flows in processing machinery

83.70.-f  Material form
83.70.Bi  Homogeneous solids
83.70.Dk  Composite solids
83.70.Fn  Granular solids
83.70.Gp  Homogeneous isotropic liquids; solutions and melts
83.70.Hq  Heterogeneous liquids: suspensions, dispersions, emulsions,
          pastes, slurries, foams, block copolymers, etc.
83.70.Jr  Liquid crystals: nematic, cholesteric, smectic, discotic, etc.

83.80.-k  Material types
83.80.Bp  Thermoplastic polymers
83.80.Cq  Thermosetting polymers
83.80.Dr  Elastomeric polymers
83.80.Es  Polymer blends
83.80.Gv  Electro- and magnetorheological fluids
83.80.Jx  Chemically reactive materials
83.80.Lz  Biological materials: blood, collagen, wood, food, etc.
83.80.Nb  Geological materials: Earth, magma, ice, rocks, etc.
83.80.Pc  Inorganic materials

83.85.-c  Techniques and apparatus
83.85.Cg  Rheological measurements
83.85.Ei  Optical methods; sonography
83.85.Gk  Sensors
83.85.Jn  Viscosity measurements
83.85.Lq  Normal stress measurements
83.85.Ns  Data analysis (interconversion of experiments; computation of
          relaxation and retardation spectra; time-temperature
          superposition, etc.)
83.85.Pt  Flow computation (e.g. finite element)
          (see also 02.70--in Mathematical methods in physics)

83.90.+s  Other topics in rheology

84.       Electronics; radiowave and microwave technology; direct energy
          conversion and storage

84.30.-r  Electronic circuits
          (for integrated circuits, see 85.40)
84.30.Bv  Circuit theory (including computer-aided circuit design and
          analysis)
......    Microwave circuits, see 84.40.D
84.30.Jc  Power electronics; power supply circuits
          (see also 84.70 High-current and high-voltage technology)
84.30.Le  Amplifiers
84.30.Ng  Oscillators, pulse generators, and function generators
84.30.Qi  Modulators and demodulators; discriminators, comparators, mixers,
          limiters, and compressors
84.30.Sk  Pulse and digital circuits
84.30.Vn  Filters
......    Special purpose circuits, see 07.50.E
84.30.Yq  Other electronic circuits

84.32.-y  Passive circuit components
          (see also 07.50 Electrical and electronic components,
          instruments, and techniques)
84.32.Dd  Connectors, relays, and switches
84.32.Ff  Conductors, resistors (including thermistors, varistors, and
          photoresistors)
84.32.Hh  Inductors and coils; wiring
84.32.Tt  Capacitors
84.32.Vv  Fuses

84.35.+i  Neural networks
          (for optical neural networks, see 42.79.T, see also 07.05.M
          Neural networks, fuzzy logic, artificial intelligence)

84.37.+q  Electric variable measurements (including voltage, current,
          resistance, capacitance, inductance, impedance, and admittance,
          etc.)

84.40.-x  Radiowave and microwave (including millimeter wave) technology
......    Microwave, submillimeter wave, and radiowave receivers and
          detectors, see 07.57.K
......    Microwave and radiowave spectrometers, see 07.57.P
......    Electromagnetic wave propagation, see 41.20.J
84.40.Az  Waveguides, transmission lines, striplines
84.40.Ba  Antennas: theory, components and accessories
          (for plasma interactions with antennas, see 52.40.F in Plasma
          physics)
84.40.Dc  Microwave circuits
84.40.Fe  Microwave tubes (e.g. klystrons, magnetrons, traveling-wave,
          backward-wave tubes, etc.)
84.40.Ik  Masers; gyrotrons (cyclotron-resonance masers)
84.40.Lj  Microwave integrated electronics
84.40.Ua  Telecommunications: signal transmission and processing;
          communication satellites
          (for optical communications, see 42.79.S)
84.40.Xb  Telemetry: remote control, remote sensing; radar
84.40.Zc  Other topics in radiowave and microwave technology

84.47.+w  Vacuum tubes
          (see also 85.45 Vacuum microelectronics)

......    Phototubes, see 85.60.H

......    Microwave tubes, see 84.40.F

84.50.+d  Electric motors

84.60.-h  Direct energy conversion and storage
84.60.Bk  Performance characteristics of energy conversion systems; figure
          of merit
84.60.Dn  Electrochemical conversion and storage: electrochemical cells and
          batteries; fuel cells
84.60.Jt  Photoelectric conversion: solar cells and arrays
          (for solar collectors and concentrators, see 42.79.E)
84.60.Lw  Magnetohydrodynamic conversion
          (for MHD generators, see 52.75.F--in plasma physics)
84.60.Ny  Thermionic conversion
          (for thermionic generators, see 52.75.F--in plasma physics)
84.60.Rb  Thermoelectric, electrogasdynamic and other direct energy
          conversion
84.60.Ve  Energy storage systems, including capacitor banks

84.70.+p  High-current and high-voltage technology: power systems; power
          transmission lines and cables (including superconducting cables)

84.90.+a  Other topics in electronics, radiowave and microwave technology,
          and direct energy conversion and storage

85.       Electronic and magnetic devices; microelectronics

......    Vacuum tubes, see 84.47

......    Microwave tubes, see 84.40.F

......    Cathode-ray and storage tubes, see 84.47

......    Phototubes, see 85.60.H

......    Conductors, inductors, and switches, see 84.32

85.25.-j  Superconducting devices
85.25.Am  Superconducting device characterization, design, and modeling
85.25.Cp  Josephson devices
85.25.Dq  Superconducting quantum interference devices (SQUIDs)
85.25.Hv  Superconducting logic elements and memory devices
85.25.Kx  Superconducting wires, fibers, and tapes
85.25.Ly  Superconducting magnets; magnetic levitation devices
          (for superconducting cables, see 84.70)
85.25.Na  Superconducting microelectronic circuits
85.25.Pb  Superconducting infrared, submillimeter and millimeter wave
          detectors
......    High power superconducting devices, see 84.70
85.25.Qc  Superconducting surface acoustic wave devices and other
          superconducting devices

85.30.-z  Semiconductor devices
          (for photodiodes, phototransistors, and photoresistors, see
          85.60.D; for laser diodes, see 42.55.P)
85.30.De  Semiconductor-device characterization, design, and modeling
85.30.Fg  Bulk semiconductor and conductivity oscillation devices
          (including Hall effect devices, space-charge-limited devices, and
          Gunn effect devices)
85.30.Hi  Surface barrier, boundary, and point contact devices
85.30.Kk  Junction diodes
85.30.Mn  Junction breakdown and tunneling devices (including resonance
          tunneling devices)
85.30.Pq  Bipolar transistors
85.30.Rs  Thyristors
85.30.St  Quantum interference devices
85.30.Tv  Field effect devices
85.30.Vw  Low-dimensional quantum devices (quantum dots, quantum wires
          etc.)
85.30.Wx  Single electron devices
85.30.Yy  Other semiconductor devices

85.40.-e  Microelectronics: LSI, VLSI, ULSI; integrated circuit fabrication
          technology
          (see also 85.45 Vacuum microelectronics, 85.30 Semiconductor
          devices, and 81.65 Surface treatments)
......    Microwave integrated electronics, see 84.40.L
......    Optoelectronic integrated circuits, see 42.82
......    Superconducting integrated circuits, see 85.25.N
85.40.Bh  Computer-aided design of microcircuits; layout and modeling
85.40.Hp  Lithography, masks and pattern transfer
......    Micromechanical devices and systems, see 07.10.C
85.40.Ls  Metallization, contacts, interconnects; device isolation
85.40.Qx  Microcircuit quality, noise, performance, and failure analysis
85.40.Ry  Impurity doping, diffusion and ion implantation technology
85.40.Sz  Deposition technology
          (for plasma applications in deposition technology, see 52.75.R)
85.40.Ux  Nanometer-scale fabrication technology
......    Bipolar integrated circuits, see 85.30.P
......    Field effect integrated circuits, see 85.30.T
......    Surface acoustic wave microelectronic circuits, see 85.30.Y
85.40.Yd  Other topics in microelectronics and integrated circuit
          fabrication technologies

......    Nanometer-scale fabrication technology, see 85.40.U

......    Nanophase materials, see 81.05.Y

......    Micromechanical devices and systems, see 07.10.C

85.45.-w  Vacuum microelectronics
......    Microwave vacuum microelectronic devices, see 84.40
85.45.Bz  Vacuum microelectronic device characterization, design, and
          modeling
85.45.Db  Field emitter and arrays, cold electron emitters
85.45.Fd  Field emission displays (FEDs)
85.45.Yv  Other vacuum microelectronic devices

85.50.+k  Dielectric, ferroelectric, and piezoelectric devices

......    Capacitors, see 84.32.T

85.60.-q  Optoelectronic devices
          (see also 42.79 Optical elements, devices and systems)
85.60.Bt  Optoelectronic device characterization, design, and modeling
85.60.Dw  Photodiodes; phototransistors; photoresistors
85.60.Gz  Photodetectors (including infrared and CCD detectors)
          (for superconducting infrared detectors, see 85.25.P)
85.60.Ha  Photomultipliers; phototubes and photocathodes
85.60.Jb  Light-emitting devices
85.60.Me  Other optoelectronic devices
85.60.Pg  Display systems
          (for field emission display, see 85.45.F, for optical display
          devices, see 42.79.K, see also 07.07.H Display and recording
          equipment, oscilloscopes, TV cameras, etc.)

85.65.+h  Molecular electronic devices

85.70.-w  Magnetic devices
85.70.Ay  Magnetic device characterization, design, and modeling
85.70.Ec  Magnetostrictive, magnetoacoustic, and magnetostatic devices
......    Magnetic recording materials, see 75.50.S
85.70.Ge  Ferrite and garnet devices
85.70.Kh  Magnetic thin film devices: magnetic heads (magnetoresistive,
          inductive, etc.); domain-motion devices, etc.
85.70.Li  Other magnetic recording and storage devices (including tapes,
          disks, and drums)
......    Magnets, see 07.55.D
......    Superconducting magnets and magnetic levitation devices, see
          85.25.L
......    Beam bending magnets, see 41.85.L
85.70.Rp  Magnetic levitation, propulsion and control devices
          (for superconducting-magnetic levitation devices, see 85.25.L)
85.70.Sq  Magnetooptical devices
85.70.Yv  Other magnetic devices

85.80.-b  Electrochemical, thermoelectromagnetic, and other devices
          (for acoustoelectric devices, see 43.38)
85.80.Dg  Electrochemical devices
85.80.Fi  Thermoelectric devices
85.80.Jm  Magnetoelectric devices
85.80.Lp  Magnetothermal devices

85.90.+h  Other topics in electronic and magnetic devices and
          microelectronics

87.       Biological and medical physics

87.10.+e  General, theoretical, and mathematical biophysics (including
          logic of biosystems, quantum biology, and relevant aspects of
          thermodynamics, information theory, cybernetics, and bionics)

87.15.-v  Molecular biophysics
87.15.By  Structure, bonding, conformation, configuration, and isomerism of
          biomolecules
87.15.Da  Physical chemistry of solutions of biomolecules; condensed states
87.15.He  Molecular dynamics and conformational changes
87.15.Kg  Molecular interactions
87.15.Mi  Spectra, photodissociation, and photoionization of biomolecules;
          bioluminescence
87.15.Rn  Photochemical reactions of biomolecules; biochemical reaction
          mechanisms and kinetics; enzymatic catalysis; model reactions

87.22.-q  Physics of cellular and physiological processes
87.22.As  General theory and phenomenology
87.22.Bt  Membrane and subcellular physics and structure
87.22.Fy  Active transport processes across biological membranes;
          intracellular electron transport; energy transduction (including
          photosynthesis and oxidative phosphorylation)
87.22.Jb  Muscle contraction, nerve conduction, synaptic transmission,
          memorization, and other neurophysiological processes (excluding
          perception processes and speech)
87.22.Me  Enzymatic catalysis
87.22.Nf  Mechano- and chemoceptions (including biosonic generation,
          detection, and guidance)
87.22.Pg  Biothermics
......    Physiological optics, see 42.66
......    Physiological acoustics, see 43.64
......    Psychological acoustics, see 43.66
......    Speech production, see 43.70
......    Speech perception, see 43.71
......    Speech processing and communication systems, see 43.72

87.40.+w  Biomagnetism (cardiomagnetism, neuromagnetism, tissue
          susceptibility) and magnetobiology (magnetic field effects on
          cellular processes, and on navigation and behavior of various
          species)

87.45.-k  Biomechanics, biorheology, and biological fluid dynamics
          (see also 83.80.L--in rheology; for rheological properties of
          biological materials, see 83.50)
87.45.Bp  Mechanical properties of tissues and organs
87.45.Dr  Physics of body movements
87.45.Ft  Rheology of body fluids
87.45.Hw  Haemodynamics, pneumodynamics

87.50.-a  Biological effects of electromagnetic and particle radiation
          (see also 28.41.T Protection systems, safety, radiation
          monitoring, accidents, and dismantling, 28.52.N Safety)
87.50.Gi  Ionizing radiations (ultraviolet, x-rays, gamma-rays, ions,
          electrons, positrons, neutrons, and mesons, etc.)
87.50.Hj  Optical radiation (near ultraviolet, visible, and infrared)
87.50.Jk  Radiofrequency and microwave radiation (power lines)
87.50.Ln  Linear energy transfer (LET)
87.50.Nq  Radiation protection (low LET) for diagnostic and therapeutic x-
          ray energies
87.50.Pr  Radiation protection (high LET)

87.51.+e  Biological effects of sound and ultrasound; lithotripsy

87.53.-j  Ionizing-radiation therapy physics
87.53.Bn  Photon dosimetry: theory and algorithms
87.53.Dq  Photon dosimetry: measurements
87.53.Fs  Electron and positron dosimetry: theory and algorithms
87.53.Hv  Electron and positron dosimetry: measurements
87.53.Jw  Brachytherapy dosimetry: theory, algorithms, and measurements
87.53.Ly  Stereotactic radiosurgery dosimetry: theory, algorithms, and
          measurements
87.53.Na  Radioimmunotherapy dosimetry: theory, algorithms, and
          measurements
87.53.Pb  Proton, neutron, and heavier particle dosimetry: theory and
          algorithms
87.53.Qc  Proton, neutron, and heavier particle dosimetry: measurements
87.53.Rd  Microdosimetry
87.53.Tf  Treatment planning: algorithms, collimation, verification of
          alignment, optimization, quality assurance specifications, tissue
          response factors (TCP and NTCP), etc.

87.54.-n  Non-ionizing radiation therapy physics
87.54.Br  Thermotherapy (hyperthermia and cryogenic therapy)
87.54.Dt  Electrotherapy

87.56.-v  Radiation therapy equipment
87.56.By  Radiation generators
87.56.Da  Ancillary equipment
87.56.Fc  Quality assurance equipment

87.59.-e  Medical imaging
87.59.Bh  X-ray radiography
87.59.Ci  Fluoroscopy
87.59.Dj  Angiography
87.59.Ek  Mammography
87.59.Fm  Computed tomography (CT)
87.59.Hp  Digital radiography
87.59.Jq  Transmission imaging
87.59.Ls  Bone densitometry
87.59.Mt  Ultrasonography
87.59.Pw  Magnetic resonance imaging (MRI)
87.59.Qx  Nuclear medicine imaging, dosimetry, labeling and metabolic
          studies; radiopharmaceuticals
87.59.Sz  Quantitative scanning
87.59.Ta  Single-photon emission computed-tomography (SPECT)
87.59.Vb  Positron emission tomography (PET)
87.59.Wc  Thermography, visible radiation imaging, and other imaging and
          diagnostic techniques.

87.62.+n  Medical imaging equipment

87.64.-t  Spectroscopic and microscopic techniques in biophysics and
          medical physics
          (for spectrometers, see 07.57.P, 07.57.T, 07.60.R, 07.75 and
          07.85.N)
87.64.Bx  Electron, neutron and x-ray diffraction and scattering
87.64.Dz  Electron microscopy; scanning tunneling and atomic force
          microscopy
87.64.Fb  X-ray spectroscopy, EXAFS
87.64.Hd  EPR and NMR spectroscopy
87.64.Je  Infrared and Raman spectroscopy
87.64.Lg  Electron and photoelectron spectroscopy
87.64.Ni  Optical absorption, magnetic circular dichroism, and fluorescence
          spectroscopy
87.64.Pj  Moessbauer spectroscopy

87.65.+y  Aerospace bio- and medical physics (effects of accelerations,
          weightlessness, and space environment)

87.80.+s  Biophysical instrumentation and techniques

87.90.+y  Other topics in biophysics and medical physics

89.       Other areas of research of general interest to physicists

89.20.+a  Industrial and technological research and development

89.30.+f  Energy resources

89.40.+k  Transportation

89.50.+r  Urban planning and development

89.60.+x  Environmental and ecological studies

89.70.+c  Information science

89.80.+h  Computer science and technology

89.90.+n  Other areas of general interest to physicists

90.       GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS

91.       Solid Earth physics

91.10.-v  Geodesy and gravity
91.10.By  Mathematical geodesy; general theory
91.10.Da  Cartography
91.10.Fc  Space geodetic surveys
91.10.Jf  Topography; geometric observations
91.10.Kg  Crustal movements
91.10.Lh  Photogrammetry
91.10.Nj  Rotational variations; polar wobble
91.10.Qm  Harmonics of the gravity potential field
......    Relations of gravity observations to tectonics and isostasy, see
          91.45.S
91.10.Rn  Rheology of lithosphere and mantle
91.10.Sp  Satellite orbits
91.10.Tq  Earth tides
91.10.Vr  Ocean/Earth/atmosphere interaction
91.10.Ws  Reference systems

91.25.-r  Geomagnetism and paleomagnetism; geoelectricity
91.25.Cw  Origins and models of the magnetic field; dynamo theories
91.25.Dx  Archeomagnetism
91.25.Ey  Interactions between exterior sources and interior properties
91.25.Ga  Spatial variations: all harmonics and anomalies
91.25.Jc  Spatial variations attributed to sea floor spreading
91.25.Le  Time variations: diurnal to secular
91.25.Mf  Reversals
91.25.Ng  Paleomagnetism
91.25.Ph  Magnetostratigraphy
91.25.Qi  Geoelectricity; electromagnetic induction and conductivity
          (magnetotelluric effects)

91.30.-f  Seismology
91.30.Bi  Seismic sources (mechanisms, magnitude, moment frequency
          spectrum)
91.30.Dk  Seismicity: space and time distribution
91.30.Fn  Surface and body waves
91.30.Ks  Free oscillations (periods less than 12 hours)
91.30.Mv  Strong motions and shock waves
91.30.Nw  Tsunamis
          (for dynamics of oceans, see 92.10.D and 92.10.F)
91.30.Px  Phenomena related to earthquake prediction
91.30.Rz  Explosion seismology
91.30.Tb  Volcano seismology
91.30.Vc  Continental crust seismology
91.30.Ye  Oceanic crust seismology

91.35.-x  Earth's interior structure and properties
91.35.Cb  Models of interior structure
91.35.Dc  Heat flow; geothermy
91.35.Ed  Structure of the Earth's interior below the upper mantle
91.35.Gf  Structure of the crust and upper mantle
91.35.Lj  Composition of Earth's interior
91.35.Nm  Geochronology
91.35.Pn  Tomography of the Earth's interior
          (see also 91.30 Seismology)

91.40.-k  Volcanology
91.40.Bp  Ash deposits
91.40.Dr  Atmospheric effects
          (see also 92.60.M Particles and aerosols--in Meteorology)
91.40.Ft  Eruptions
91.40.Hw  Lava

91.45.-c  Physics of plate tectonics
91.45.Cg  Continental margins
91.45.Dh  Plate tectonics
91.45.Ei  Neotectonics
91.45.Fj  Convection currents
91.45.Pt  Slow vertical crustal movements (including isostasy and
          postglacial phenomena)
91.45.Qv  Tomography of plate tectonics
91.45.Sx  Relations of gravity observations to tectonics and isostasy
91.45.Ty  Folds and Folding
91.45.Vz  Fractures and faults
91.45.Yb  Pluton emplacement

91.50.-r  Marine geology and geophysics
91.50.Cw  Beach, coastal, and shelf processes
91.50.Ey  Ocean bottom processes
91.50.Ga  Bathymetry and noncoastal underwater morphology
91.50.Jc  Turbidity currents, sedimentation

91.60.-x  Physical properties of rocks and minerals
          (for rheological properties of geological materials, see 83.50
          and 83.80.N)
91.60.Ba  Elasticity, fracture, and flow
91.60.Dc  Creep and deformation
91.60.Ed  Crystal structure and defects
91.60.Fe  Equations of state
91.60.Gf  High-pressure behavior
91.60.Hg  Phase changes
91.60.Ki  Thermal properties
91.60.Lj  Acoustic properties
91.60.Mk  Optical properties
91.60.Pn  Magnetic and electric properties

91.65.-n  Geophysical aspects of geology, mineralogy, and petrology
91.65.Br  Geochemical cycles
91.65.Dt  Isotopic composition/chemistry
91.65.Fw  Low-temperature geochemistry
91.65.Hy  Organic geochemistry
91.65.Nd  Trace elements
91.65.Rg  Mineral occurrences and deposits
91.65.Ti  Sedimentary petrology
91.65.Vj  Major element composition

91.70.-c  Information related to geologic time
91.70.Bf  Cenozoic
91.70.Dh  Mesozoic
91.70.Fj  Paleozoic
91.70.Hm  Precambrian

91.90.+p  Other topics in solid Earth physics

92.       Hydrospheric and atmospheric geophysics

92.10.-c  Physics of the oceans
92.10.Bf  Physical properties of seawater
92.10.Cg  Capillary waves
92.10.Dh  Dynamics of the deep ocean
92.10.Ei  Coriolis effects
92.10.Fj  Dynamics of the upper ocean
92.10.Gk  El Nino
92.10.Hm  Surface waves, tides, and sea level
92.10.Jn  Seiches
92.10.Kp  Sea-air energy exchange processes
92.10.Lq  Turbulence and diffusion
92.10.Mr  Thermohaline structure and circulation
92.10.Ns  Fine structure and microstructure
92.10.Pt  Optical properties of sea water
92.10.Rw  Sea ice
92.10.Sx  Coastal and estuarine oceanography
92.10.Ty  Fronts and jets
92.10.Vz  Underwater sound
92.10.Wa  Sediment transport
92.10.Yb  Hydrography
......    Marine geology and geophysics, see 91.50

92.20.-h  Interdisciplinary aspects of oceanography
92.20.Bk  Aerosols
92.20.Cm  Chemistry of the ocean
92.20.Gr  Ocean energy extraction
92.20.Hs  Anoxic environments
92.20.Jt  Biological aspects of oceanography
92.20.Kv  Photochemistry
92.20.Lw  Photosynthesis
92.20.Mx  Physicochemical properties
92.20.Ny  Marine pollution
92.20.Pz  Bacteria
92.20.Rb  Plankton
92.20.Td  Radioactivity

92.40.-t  Hydrology and glaciology
92.40.Cy  Modeling; general theory
92.40.Ea  Precipitation
92.40.Fb  Rivers, runoff, and streamflow
92.40.Gc  Erosion and sedimentation
92.40.Je  Evaporation
92.40.Kf  Groundwater
92.40.Lg  Soil moisture
92.40.Ni  Limnology
92.40.Qk  Water quality and water resources
92.40.Rm  Snow
92.40.Sn  Ice
92.40.Vq  Glaciers

92.60.-e  Meteorology
          (see also 43.28 Aeroacoustics and atmospheric sound, 42.68
          atmospheric optics, 94.10.D Atmospheric structure, pressure,
          density, and temperature)
92.60.Bh  General circulation
92.60.Dj  Gravity waves, tides, and compressional waves
92.60.Ek  Convection, turbulence, and diffusion
92.60.Fm  Boundary layer structure and processes
92.60.Gn  Winds and their effects
92.60.Hp  Chemical composition and chemical interactions
92.60.Jq  Water in the atmosphere (humidity, clouds, evaporation,
          precipitation)
92.60.Ls  Ionic interactions and processes
92.60.Mt  Particles and aerosols
          (see also 94.20 Physics of the ionosphere)
92.60.Nv  Cloud physics
92.60.Pw  Atmospheric electricity
92.60.Qx  Storms
92.60.Ry  Climatology
92.60.Sz  Air quality and air pollution
92.60.Ta  Interaction of atmosphere with electromagnetic waves; propagation
92.60.Vb  Solar radiation
92.60.Wc  Weather analysis and prediction

92.70.-j  Global change
          (see also 92.60 Meteorology)
92.70.Cp  Atmosphere
92.70.Er  Biogeochemical processes
92.70.Gt  Climate dynamics
92.70.Jw  Oceans
92.70.Ly  Water cycles

92.90.+x  Other topics in hydrospheric and atmospheric geophysics

93.       Geophysical observations, instrumentation, and techniques

93.30.-w  Information related to geographical regions
93.30.Bz  Africa
93.30.Ca  Antarctica
93.30.Db  Asia
93.30.Fd  Australia
93.30.Ge  Europe
93.30.Hf  North America
93.30.Jg  South America
93.30.Kh  Large islands (e.g., Greenland)
93.30.Li  Arctic Ocean
93.30.Mj  Atlantic Ocean
93.30.Nk  Indian Ocean
93.30.Pm  Pacific Ocean
93.30.Qn  Southern Ocean
93.30.Rp  Regional seas
93.30.Sq  Polar regions
93.30.Tr  Temperate regions
93.30.Vs  Tropical regions

93.55.+z  International organizations, national and international programs

93.65.+e  Data acquisition and storage

93.85.+q  Instrumentation and techniques for geophysical research

94.       Aeronomy and magnetospheric physics

94.10.-s  Physics of the neutral atmosphere
          (for atmospheres of the planets, see 96.35.H)
94.10.Bw  General properties of the high atmosphere
94.10.Dy  Atmospheric structure, pressure, density, and temperature
          (stratosphere, mesosphere, thermosphere, exosphere)
          (see also 92.60 Meteorology and 92.70 Global change)
94.10.Fa  Atmospheric composition (atomic or molecular), chemical reactions
          and processes
          (see also 82.40.W Atmospheric chemistry)
94.10.Gb  Absorption and scattering of radiation
94.10.Jd  Tides, waves, and winds
94.10.Lf  Convection, diffusion, mixing, turbulence, and fallout
94.10.Nh  Cosmic dust
94.10.Rk  Aurora and airglow

94.20.-y  Physics of the ionosphere
          (for ionospheres of the planets, see 96.35.K; for radiowave
          propagation, see 41.20.J in electromagnetism, see also 52 Physics
          of plasma and electric discharges)
94.20.Bb  Wave propagation
94.20.Dd  Ionospheric structure (D, E, F, and topside regions) including
          steady-state ion densities and temperatures
94.20.Ee  D region
94.20.Gg  E region
94.20.Ji  F region
94.20.Kj  Polar cap ionosphere
94.20.Lk  Topside region
94.20.Mm  Plasmasphere
94.20.Pp  Plasmapause
94.20.Qq  Particle precipitation
94.20.Rr  Interactions between waves and particles
94.20.Ss  Electric fields
94.20.Tt  Ionospheric soundings
94.20.Vv  Ionospheric disturbances
94.20.Ww  Plasma motion, convection, or circulation
94.20.Yx  Interaction between ionosphere and magnetosphere

94.30.-d  Physics of the magnetosphere
          (for magnetospheres of the planets, see 96.35.K; for radiowave
          propagation, see 41.20.J in electromagnetism; see also 52 Physics
          of plasmas and electric discharges)
94.30.Bg  Magnetic coordinate systems
94.30.Ch  Magnetospheric configuration
94.30.Di  Magnetopause
94.30.Ej  Magnetic tail
94.30.Fk  Plasma motion, convection, or circulation
94.30.Gm  Plasma instabilities
94.30.Hn  Trapped particles
94.30.Jp  Ring currents
94.30.Kq  Electric fields
94.30.Lr  Magnetic storms, substorms
94.30.Ms  Magnetic pulsations
94.30.Tz  Waves: propagation and excitation
94.30.Va  Magnetosheath; interaction with interplanetary space (including
          solar wind)
          (for cosmic-ray interactions, see 13.85.T in elementary particle
          physics; see also 96.40 Cosmic rays--in Astronomy)

94.80.+g  Instrumentation for aeronomy and magnetospheric studies
          (see also 95.55 Astronomical and space-research instrumentation)

94.90.+m  Other topics in aeronomy and magnetospheric physics

95.       Fundamental astronomy and astrophysics; instrumentation,
          techniques, and astronomical observations

95.10.-a  Fundamental astronomy
95.10.Ce  Celestial mechanics (including n-body problems)
          (see also 03.20 Classical mechanics of discrete systems: general
          mathematical aspects)
......    Dynamics and kinematics of stellar systems, see 98.10
95.10.Eg  Orbit determination and improvement
95.10.Fh  Chaotic dynamics
          (see also 05.45 Theory and models of chaotic systems)
95.10.Gi  Eclipses, transits, and occultations
95.10.Jk  Astrometry and reference systems
95.10.Km  Ephemerides, almanacs, and calendars

95.30.-k  Fundamental aspects of astrophysics
95.30.Cq  Elementary particle processes
          (see also 26 Nuclear astrophysics)
95.30.Dr  Atomic processes and interactions
          (see also 32 Atomic properties and interactions with photons; 34
          Atomic and molecular collision processes and interactions)
95.30.Ft  Molecular processes and interactions
          (see also 33 Molecular properties and interactions with photons;
          34 Atomic and molecular collision processes and interactions)
95.30.Gv  Radiation mechanisms
95.30.Jx  Radiative transfer
95.30.Ky  Atomic and molecular data, spectra, and spectral parameters
          (opacities, rotation constants, line identification, oscillator
          strengths, gf values, transition probabilities, etc.)
          (see also 32.10, 32.30, 32.70, 33.15, 33.20, 33.20, and 33.70 in
          atomic and molecular physics)
95.30.Lz  Hydrodynamics
95.30.Qd  Magnetohydrodynamics and plasmas
95.30.Sf  Relativity and gravitation
          (see also 04 General relativity and gravitation, 98.80.H
          Mathematical and relativistic cosmology)
95.30.Tg  Thermodynamic processes
          (see also 05.70 Thermodynamics)

95.35.+d  Dark matter (stellar, interstellar, galactic, and cosmological)
          (see also 95.30.C Elementary particle and nuclear processes; for
          brown dwarfs, see 97.20.V; for galactic halos, see 98.35.G or
          98.62.G; for models of the early Universe, see 97.10.F)

95.40.+s  Artificial Earth satellites
          (for lunar and planetary probes, see 95.55.P)

95.45.+i  Observatories

95.55.-n  Astronomical and space-research instrumentation
          (see also 94.80 Instrumentation for aeronomy and magnetospheric
          studies)
95.55.Aq  Charge-coupled devices and image detectors
          (see also 85.60.G Photodetectors)
95.55.Br  Astrometric and interferometric instruments
95.55.Cs  Ground-based ultraviolet, optical and infrared telescopes
95.55.Ev  Solar instruments
95.55.Fw  Space-based ultraviolet, optical, and infrared telescopes
95.55.Jz  Radio telescopes and instrumentation
95.55.Ka  X- and gamma-ray telescopes and instrumentation
95.55.Pe  Lunar, planetary, and deep-space probes
95.55.Qf  Photometric, polarimetric, and spectroscopic instrumentation
          (see also 07.60 Optical instruments, equipment, and techniques)
95.55.Sh  Auxiliary and recording instruments; clocks and frequency
          standards
95.55.Vj  Neutrino, muon, pion, and other elementary particle detectors;
          cosmic ray detectors
          (see also 29.40 Radiation detectors--in nuclear physics)
95.55.Ym  Gravitational radiation detectors; mass spectrometers; and other
          instrumentation and techniques
          (see also 04.80 Experimental studies of gravity in general
          relativity and gravitation)

95.75.-z  Observation and data reduction techniques; computer modeling and
          simulation
95.75.De  Photography and photometry
95.75.Fg  Spectroscopy and spectrophotometry
95.75.Hi  Polarimetry
95.75.Kk  Interferometry
95.75.Mn  Image processing
95.75.Pq  Mathematical procedures and computer techniques
95.75.Qr  Adaptive and segmented optics
          (see also 42.68 Atmospheric optics)
95.75.Rs  Remote observing techniques
95.75.St  Other techniques

95.80.+p  Catalogues, atlases, databases, retrieval systems, etc.

95.85.-e  Astronomical observations
          (additional primary heading(s) must be chosen with these entries
          to represent the astronomical objects and/or properties studied)
95.85.Bh  Radio, microwave, and submillimeter
95.85.Gn  Far infrared (10-300 mum)
95.85.Hp  Infrared (3-10 mum)
95.85.Jq  Near infrared (0.75-3 mum)
95.85.Kr  Visible (390-750 nm)
95.85.Ls  Near ultraviolet (300-390 nm)
95.85.Mt  Ultraviolet (10-300 nm)
95.85.Nv  X-ray
95.85.Pw  gamma-ray
95.85.Ry  Neutrino, muon, pion, and other elementary particles; cosmic rays
95.85.Sz  Gravitational radiation, magnetic fields, and other observations

95.90.+v  Historical astronomy and archaeoastronomy; and other topics in
          fundamental astronomy and astrophysics; instrumentation,
          techniques, and astronomical observations

96.       Solar System
          (for the Earth, see 91-94)

96.10.+i  General, solar nebula, and cosmogony

96.20.-n  Moon
96.20.Br  Origin, formation, and age
96.20.Dt  Features, landmarks, mineralogy, petrology, and atmosphere
96.20.Jz  Gravitational field, selenodesy, magnetic fields
96.20.Ka  Cratering

96.30.-t  Planets, their satellites and rings; asteroids
          (for the Moon, see 96.20; for comets, see 96.50.G)
......    Celestial mechanics, see 95.10.C
96.30.Dz  Mercury
96.30.Ea  Venus
96.30.Gc  Mars
96.30.Kf  Jupiter
96.30.Mh  Saturn
96.30.Pj  Uranus
96.30.Rm  Neptune
96.30.Sn  Pluto
96.30.Wr  Planetary rings
96.30.Ys  Asteroids (minor planets)

96.35.-j  Planetary, asteroid, and satellite characteristics and properties
          (see also 97.82 for extrasolar planetary systems)
96.35.Cp  Origin, formation, evolution, and ages
96.35.Er  Chemical composition
96.35.Fs  Mass, size; gravitational fields; rotation; orbits
96.35.Gt  Surface features, cratering, and topography
96.35.Hv  Neutral atmospheres
96.35.Kx  Ionospheres; magnetospheres
96.35.Mz  Interiors
96.35.Na  Volcanism and tectonics
96.35.Pb  Electric and magnetic fields
96.35.Se  Interplanetary comparisons

96.40.-z  Cosmic rays
          (for cosmic rays outside the Solar System, see 98.70.S)
96.40.Cd  Interplanetary propagation and effects
96.40.De  Composition, energy spectra, and interactions
96.40.Fg  Energetic solar particles and photons
96.40.Kk  Solar modulation and geophysical effects
96.40.Pq  Extensive air showers
96.40.Tv  Neutrinos and muons
96.40.Vw  Cosmic-ray effects in meteorites and terrestrial matter

96.50.-e  Interplanetary space
          (for asteroids, see 96.30.Y)
96.50.Bh  Solar electric and magnetic fields (including solar wind fields)
96.50.Ci  Solar wind plasma
96.50.Dj  Interplanetary gas and dust (including gegenschein and zodiacal
          light)
96.50.Ek  Solar wind interactions with planets, satellites, and comets
          (for interactions with Earth, see 94.30.V)
96.50.Fm  Shock waves
96.50.Gn  Comets
96.50.Kr  Meteors and meteoroids
96.50.Mt  Meteorites, micrometeorites, and tektites

96.60.-j  Solar physics
96.60.Bn  Diameter, figure, rotation, mass
96.60.Fs  Chemical composition
96.60.Hv  Electric and magnetic fields
96.60.Jw  Solar interior
          (for solar neutrinos, see 26.65)
96.60.Ly  Oscillations and waves; helioseismology
96.60.Mz  Photosphere, granulation
96.60.Na  Chromosphere and chromosphere-corona transition; spicules
96.60.Pb  Corona; coronal loops, streamers, and holes
96.60.Qc  Sunspots, faculae, plages
96.60.Rd  Flares, bursts, and related phenomena
96.60.Se  Prominences
96.60.Tf  Solar electromagnetic radiation
          (for geophysical effects, see 92.60.V, 94.20, and 94.30)
96.60.Vg  Particle radiation, solar wind
          (for geophysical effects, see 94.30.V; see also 96.50.B, 96.50.C,
          and 96.50.E--in interplanetary space)

96.90.+c  Other topics on the solar system

97.       Stars

97.10.-q  Stellar characteristics and properties
          (see also 04.40.D Relativistic stars and 26 Nuclear astrophysics)
97.10.Bt  Star formation
97.10.Cv  Stellar structure, interiors, evolution, nucleosynthesis, ages
97.10.Ex  Stellar atmospheres (photospheres, chromospheres, coronae,
          magnetospheres); radiative transfer; opacity and line formation
97.10.Fy  Circumstellar shells, clouds, and expanding envelopes;
          circumstellar masers
          (for interstellar masers, see 98.38.E or 98.58.E)
97.10.Gz  Accretion and accretion disks
97.10.Jb  Stellar activity
97.10.Kc  Stellar rotation
97.10.Ld  Magnetic and electric fields; polarization of starlight
97.10.Me  Mass loss and stellar winds
97.10.Nf  Masses
97.10.Pg  Radii and surface features (starspots, etc.)
97.10.Ri  Luminosities; magnitudes; effective temperatures, color, and
          spectral classification
97.10.Sj  Pulsations, oscillations, and stellar seismology
97.10.Tk  Abundances, chemical composition
97.10.Vm  Distances, parallaxes
97.10.Wn  Proper motions and radial velocities; space motions
          (see also 95.10.J Astrometry and reference systems)
97.10.Yp  Star counts, distribution, and statistics

97.20.-w  Normal stars (by class): general or individual
97.20.Ec  Main-sequence: early-type stars (O and B)
97.20.Ge  Main-sequence: intermediate-type stars (A and F)
97.20.Jg  Main-sequence: late-type stars (G, K, and M)
97.20.Li  Giant and subgiant stars
97.20.Pm  Supergiant stars
97.20.Rp  Faint blue stars, white dwarfs, degenerate stars, nuclei of
          planetary nebulae
          (for planetary nebulae, see 98.38.L or 98.58.L)
97.20.Tr  Population II stars (blue stragglers, horizontal branch, metal
          poor, etc.)
97.20.Vs  Low luminosity stars, subdwarfs, and brown dwarfs
97.20.Wt  Population III stars

97.21.+a  Pre-main sequence objects, young stellar objects (YSO's) and
          protostars (T Tauri stars, Orion population, Herbig-Haro objects,
          Bok globules, bipolar outflows, cometary nebulae, etc.)
          (see also 98.38.F and 98.58.F Jets, outflows and bipolar flows in
          the Milky Way and external galaxies)

97.30.-b  Variable and peculiar stars (including novae)
97.30.Dg  Low-amplitude blue variables (alpha Cygni, beta Cephei, delta
          Scuti, delta Delphini, delta Canis Majoris, SX Phoenicius, etc.)
97.30.Eh  Emission-line stars (Of, Be, Luminous Blue Variables, Wolf-Rayet,
          etc.)
97.30.Fi  Chemically peculiar stars (Ap, Am, etc.)
97.30.Gj  Cepheids (delta Cephei, W Virginis)
97.30.Hk  Carbon stars, S stars, and related types (C, S, R, and N)
97.30.Jm  Long-period variables (Miras) and semiregulars
97.30.Kn  RR Lyrae stars; RV Tauri and PV Telescopii variables
97.30.Nr  Flare stars (UV Ceti, RS Canum Venaticorum, FU Orionis, R Coronae
	  Borealis variables, etc.)
97.30.Qt  Novae, dwarf novae, recurrent novae, and other cataclysmic
          (eruptive) variables
          (see also 97.80.G, J Cataclysmic binaries and X-ray binaries)
97.30.Sw  Other types of variables

97.60.-s  Late stages of stellar evolution (including black holes)
          (see also 04.40.D Relativistic stars)
97.60.Bw  Supernovae
          (see also 26.30 Nucleosynthesis in novae, supernovae and other
          explosive stars and 26.50 Nuclear physics aspects of supernovae
          evolution)
97.60.Gb  Pulsars
97.60.Jd  Neutron stars
          (see also 26.60 Nuclear matter aspects of neutron stars)
97.60.Lf  Black holes
          (see also 04.70 Physics of black holes, 95.30.S Relativity and
          gravitation; for galactic black holes, see 98.35.J and 98.62.J;
          for infall, accretion, and accretion disks, see 98.62.M)
97.60.Sm  Other objects believed to be disintegrating or collapsing

97.80.-d  Binary and multiple stars
97.80.Af  Astrometric and interferometric binaries
97.80.Di  Visual binaries
97.80.Fk  Spectroscopic binaries; close binaries
97.80.Gm  Cataclysmic binaries (novae, dwarf novae, recurrent novae, and
          nova-like objects); symbiotic stars
          (see also 97.30.Q Novae)
97.80.Hn  Eclipsing binaries
97.80.Jp  X-ray binaries
          (see also 98.70.Q X-ray sources and 97.60.G Pulsars)
97.80.Kq  Multiple stars

97.82.+k  Extrasolar planetary systems

97.90.+j  Other topics on stars

98.       Stellar systems; interstellar medium; galactic and extragalactic
          objects and systems; the Universe

98.10.+z  Stellar dynamics and kinematics

98.20.-d  Stellar clusters and associations
98.20.Af  Associations of stars (OB, T, R) in the Milky Way
98.20.Bg  Associations of stars (OB, T, R) in external galaxies
98.20.Di  Open clusters in the Milky Way
98.20.Fk  Open clusters in external galaxies
98.20.Gm  Globular clusters in the Milky Way
98.20.Jp  Globular clusters in external galaxies

98.35.-a  Characteristics and properties of the Milky Way galaxy
98.35.Ac  Origin, formation, evolution, age, and star formation
98.35.Bd  Chemical composition and chemical evolution
98.35.Ce  Mass and mass distribution
98.35.Df  Kinematics, dynamics, and rotation
98.35.Eg  Electric and magnetic fields
98.35.Gi  Galactic halo
98.35.Hj  Spiral arms and galactic disk
98.35.Jk  Galactic center (including black hole) and bulge
          (see also 04.70 Physics of black holes)
98.35.Ln  Stellar content and populations; morphology and overall structure
98.35.Mp  Infall and accretion
98.35.Nq  Galactic winds and fountains

98.38.-j  Interstellar medium (ISM) and nebulae in Milky Way
98.38.Am  Physical properties (magnetic fields, scintillation scattering,
          turbulence, electron density, etc.)
98.38.Bn  Atomic, molecular, and chemical processes
98.38.Cp  Interstellar dust grains
98.38.Dq  Molecular clouds, H[subon]2[suboff] clouds, dense clouds, and
          dark clouds
98.38.Er  Interstellar masers
          (for circumstellar masers, see 97.10.F)
98.38.Fs  Jets, outflows, and bipolar flows
          (for pre-main sequence objects, see 97.21)
98.38.Gt  H I regions, diffuse clouds, and 21-cm lines
98.38.Hv  H II regions; emission and reflection nebulae
98.38.Jw  Infrared sources
98.38.Kx  Intercloud medium (ICM)
98.38.Ly  Planetary nebulae
          (for nuclei of planetary nebulae, see also 97.20.R)
98.38.Mz  Supernova remnants

98.52.-b  Normal galaxies; extragalactic objects and systems (by type)
98.52.Cf  Classification and classification systems
98.52.Eh  Elliptical galaxies
98.52.Lp  Lenticular (S0) galaxies
98.52.Nr  Spiral galaxies
98.52.Sw  Irregular and peculiar galaxies
98.52.Wz  Dwarf galaxies (elliptical, irregular, and spheroidal)

98.54.-h  Quasars; active or peculiar galaxies, objects, and systems
98.54.Aj  Quasars
98.54.Cm  Active and peculiar galaxies (including BL Lacertae objects,
          blazars, Seyfert galaxies, Markarian galaxies, and active
          galactic nuclei)
98.54.Ep  Starburst galaxies and infrared galaxies
98.54.Gr  Radio galaxies

98.56.-p  Local group; Magellanic clouds
98.56.Ew  Elliptical galaxies
98.56.Ne  Spiral galaxies (M31 and M33)
98.56.Si  Magellanic clouds and other irregular galaxies
98.56.Wm  Dwarf galaxies (elliptical, irregular, and spheroidal)

98.58.-w  Interstellar medium (ISM) and nebulae in external galaxies
98.58.Ay  Physical properties (magnetic fields, scintillation scattering,
          turbulence, electron density, etc.)
98.58.Bz  Atomic, molecular, and chemical processes
98.58.Ca  Interstellar dust grains
98.58.Db  Molecular clouds, H[subon]2[suboff] clouds, dense clouds, and
          dark clouds
98.58.Ec  Interstellar masers
          (for circumstellar masers, see 97.10.F)
98.58.Fd  Jets, outflows and bipolar flows
          (for pre-main sequence objects, see 97.21)
98.58.Ge  H I regions, diffuse clouds, and 21-cm lines
98.58.Hf  H II regions; emission and reflection nebulae
98.58.Jg  Infrared sources
98.58.Kh  Intercloud medium (ICM)
98.58.Li  Planetary nebulae
          (for nuclei of planetary nebulae, see also 97.20.R)
98.58.Mj  Supernova remnants

98.62.-g  Characteristics and properties of external galaxies and
          extragalactic objects
          (for the Milky Way, see 98.35)
98.62.Ai  Origin, formation, evolution, age, and star formation
98.62.Bj  Chemical composition and chemical evolution
98.62.Ck  Masses and mass distribution
98.62.Dm  Kinematics, dynamics, and rotation
98.62.En  Electric and magnetic fields
98.62.Gq  Galactic halos
98.62.Hr  Spiral arms and bars; galactic disks
98.62.Js  Galactic nuclei (including black holes) and bulges
          (see also 04.70 Physics of black holes)
98.62.Lv  Stellar content and populations; radii; morphology and overall
          structure
98.62.Mw  Infall, accretion, and accretion disks
          (see also 04.70 Physics of black holes)
98.62.Nx  Jets and bursts; galactic winds and fountains
98.62.Py  Distances, redshifts, radial velocities; spatial distribution of
          galaxies
98.62.Qz  Magnitudes and colors; luminosities
98.62.Ra  Intergalactic and intracluster matter
98.62.Sb  Gravitational lenses and luminous arcs
          (see also 95.30.S Relativity and gravitation)
98.62.Tc  Astrometry; identification

98.65.-r  Galaxy groups, clusters, and superclusters; large scale structure
          of the Universe
98.65.At  Interacting galaxies, galaxy pairs and triples; galaxy mergers
98.65.Bv  Galaxy groups
98.65.Cw  Galaxy clusters
98.65.Dx  Superclusters; large-scale structure of the Universe (including
          voids, pancakes, great wall, protogalaxies, and primordial
          galaxies)

98.70.-f  Other sources and radiations (including cosmic rays outside the
          Solar System)
          (for cosmic rays in the Solar System, see 96.40; for pulsars, see
          97.60.G)
98.70.Dk  Radio sources
......    Quasars, see 98.54.A
98.70.Lt  IR sources
          (for IR sources in interstellar medium, see 98.38.J and/or
          98.58.J)
98.70.Qy  X-ray sources
          (see also 97.30.Q Novae, dwarf novae, 97.80.J X-ray binaries)
98.70.Rz  gamma-ray sources
98.70.Sa  Cosmic rays (including sources, origin, acceleration, and
          interactions)
98.70.Vc  Background radiations

98.80.-k  Cosmology
          (see also 04 General relativity and gravitation; for origin and
          evolution of galaxies, see 98.62.A; for elementary particle and
          nuclear processes, see 95.30.C; for dark matter, see 95.35; for
          superclusters and large-scale structure of the Universe, see
          98.65.D)
98.80.Bp  Origin and formation of the Universe
98.80.Cq  Particle-theory and field-theory models of the early Universe
          (including cosmic pancakes, cosmic strings, chaotic phenomena,
          inflationary universe, etc.)
98.80.Es  Observational cosmology
98.80.Ft  Origin and formation of the elements
          (see also 26.40 Big Bang nucleosynthesis)
98.80.Hw  Mathematical and relativistic aspects of cosmology; quantum
          cosmology
          (see also 95.30.S Relativity and gravitation)

98.90.+s  Other topics on stellar systems; interstellar medium; galactic
          and extragalactic objects and systems; the Universe

99.10.+g  Errata


Last updated: March 10, 1998.
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