PACS codes from Acoustics Appendix are
indicated by an asterisk (*).

            ---
	     S
            ---

S-matrix theory, 11.55
Safety
 -fission reactor, 28.41.T
 -fusion reactor, 28.52.N
 -laboratory, 06.60.W
 -laser systems, 42.60.B
 -medical physics, 87.50.N, P
Sagnac effect, fiber gyros, 42.81.P
Sample preparation, 06.60.E
Satellites
 -artificial, 07.87
  -Earth, 95.40
  -lunar and planetary probes, 95.55.P
  -orbits of, 91.10.S
 -communication, 84.40.U
 -interaction with solar wind, 96.50.E
 -planetary, 96.30
Saturn, 96.30.M
SAW devices, 85.50
Scaling phenomena (field theory), 11.10.J
Scanners, optical, 42.79.L
Scanning Auger microscopy, 61.16.M
Scanning electron microscopy, 61.16.B
Scanning probe microscopes, 07.79
Scanning tunneling microscopy
 -biophysics and medical physics, 87.64.D
 -instrumentation, 07.79.C
 -surface structure, 61.16.C
Scattering
 -acoustical, *43.20.F, *43.25.J
  -ultrasound, *43.35.B, C
  -underwater, *43.30.F, G, H
 -Brillouin
  -condensed matter, 78.35
  -nonlinear optics, 42.65.E
  -plasma waves, 52.35.N
 -elastic
  -atomic and molecular, 34.50
  -pion-nucleus, 25.80.D
 -electron
  -atomic and molecular collisions, 34.80
  -in magnetic structure determinations, 75.25
  -nuclear reactions, 25.30
  -structure determination, 61.14
 -in electronic transport
  -metals and alloys, 72.15.Q
  -semiconductors and insulators, 72.20.D
  -thin films, 73.50.B
 -hadron-induced
  -high-energy, 13.85
  -low-energy, 13.75
 -hyperon-induced, 25.80.P
 -inelastic
  -atomic and molecular, 34.50
  -neutron, 25.40.F
  -pion, 25.80.E
 -laser-modified, 34.50.R, 34.80.Q
 -muon-nucleus, 25.30.M
 -neutrino-nucleus, 25.30.P
 -neutron, 28.20.C
  -structural analysis, 61.12
 -nonrelativistic theory, 03.65.N
 -by phonons and magnons, 72.10.D
 -pion inclusive, 25.80.L
 -positron-nucleus, 25.30.H
 -relativistic theory, 11.80
 -x-ray
  -condensed matter, 78.70.C
  -plasma, 52.25.N
  -structure determination, 61.10
Scattering matrix, 11.55
Scattering methods (electronic structure), 71.15.C
Scattering theory, 03.80
Schlieren devices, 42.79.M
Schottky barrier diodes, 85.30.H, K
Schottky barriers, 73.30
Schottky defects, 61.72.J
Schroedinger equation, 03.65.G
Science
 -in elementary and secondary school, 01.40.E
 -history of, 01.65
 -philosophy of, 01.70
Scintillation detectors, 29.40.M
Sea level, 92.10.H
Seafloor spreading, 91.25.J
Seas, regional, 93.30.R
Seawater
 -optical properties, 92.10.P
 -physical properties, 92.10.B
Second harmonic generation, 42.65.K
Second sound (quantum fluids), 67.40.P
Secondary electron emission, 79.20.H
Secondary-ion mass spectroscopy (SIMS), 61.72.S, 81.70.J, 82.80.M
Sediment transport, oceanic, 92.10.W
Sedimentary petrology, 91.65.T
Sedimentation, 83.70.H
 -hydrology, 92.40.G
 -marine geology, 91.50.J
Segregation, 64.75
Seiches, 92.10.J
Seismographs, *43.40.P
Seismology, 91.30
 -underwater acoustics, *43.30.M
Selected-area electron diffraction, 61.14.L
Selenodesy, 96.20.J
Self-consistent field calculations
 -atoms and molecules, 31.15.N
 -nuclear structure, 21.60.J
 -solids, 71.15.M
Self-diffusion
 -in metals and alloys, 66.30.F
 -in nonmetals, 66.30.H
Self-focusing, 42.65.J
Self-gravitating systems, 04.40
Self-induced transparency, 42.50.M
Self-organized criticality, 64.60.L
Semiclassical theories
 -atomic physics, 31.15.G
 -gauge fields, 11.15.K
 -quantum mechanics, 03.65.S
Semiconductor detectors
 -for nuclear physics, 29.40.W
 -optoelectronic, 85.60
Semiconductor devices, 85.30
Semiconductor lasers, 42.55.P
Semiconductors
 -absorption and reflection spectra, 78.40.F
 -amorphous (conductivity), 72.80.N
  -thin films, 73.61.J
 -band structure, 71.20.M, N
 -conductivity, 72.20
 -doping, 61.72
 -fabrication, 81.05.C, D, E, G, H
 -impurity levels, 71.55
 -infrared and Raman spectra, 78.30.A, F
 -liquid
  -conductivity of, 72.80.P
  -electronic structure, 71.22
 -magnetic, 75.50.P
 -nonlinear optical materials, 42.70.N
 -photoemission, 79.60.E
 -photoluminescence, 78.55
 -radiation effects, 61.82.F
 -semiconductor-electrolyte contacts, 73.40.M
 -semiconductor-insulator-semiconductor structures, 73.40.T
 -semiconductor-metal-semiconductor structures, 73.40.V
 -semiconductor-to-insulator structure, 73.40.Q
 -semiconductor-to-semiconductor contacts, 73.40
 -thin films
  -optical properties, 78.66
  -transport processes, 73.50, 73.61
Semiconductors, elemental
 -band structure, 71.20.M
 -conductivity, 72.80.C
 -impurity and defect levels, 71.55.A
 -infrared and Raman spectra, 78.55.A
 -photoluminescence, 78.55.A
 -processing, 81.05.C
 -thin films
  -conductivity, 73.61.C
  -optical properties, 78.66.D
  -photoemission and photoelectron spectra, 79.60.B
Semiconductors, II-VI
 -doping and ion implantation, 61.72.V
 -electrical conductivity, 72.80.E
 -fabrication, 81.05.E
 -impurity and defect levels, 71.55.G
 -infrared and Raman spectra, 78.30.F
 -photoluminescence, 78.55.C
 -thin films and layered structures
  -electrical properties, 73.61.G
  -optical properties, 78.66.H
Semiconductors, III-V
 -doping and ion implantation, 61.72.V
 -electrical conductivity, 72.80.E
 -fabrication, 81.05.D
 -impurity and defect levels, 71.55.E
 -infrared and Raman spectra, 78.30.F
 -photoluminescence, 78.55.E
 -thin films and layered structures
  -electrical properties, 73.61.E
  -optical properties, 78.66.F
Semimetals
 -electronic structure, 71.20.G
 -impurity and defect absorption, 78.40.K
 -impurity and defect levels, 71.55.A
 -processing, 81.05.B
 -self-diffusion in, 66.30.F
 -visible and ultraviolet spectra, 78.40.K
Sensors, 07.07.D
 -fiber-optical, 42.81.P
 -optical, 42.79.P, Q
 -in rheology, 83.85.G
Septa (beam optics), 41.85.N
Sequences and series, 02.30.L, M
SERS, 82.65.P, 82.80.C
Servo devices, 07.07.T
Set theory, 02.10.C
Seyfert galaxies, 98.54.C
Shape memory effects, 62.20.F, 64.70.K, 81.30.K
Shear flows
 -instability, 47.20.F
 -steady (rheology), 83.50.A
 -thick, 47.27.P
 -thin wall-bounded, 47.27.L
Shear modulus, 62.20.D, 81.40.J
Shear stress, 83.10
Shear turbulence, 47.27.N
Shelf processes, 91.50.C
Shell model (nuclear structure), 21.60.C
Shells, structural mechanics of, 46.30
Shielding (nuclear technology), 28.41.Q
Shock tubes, 07.35
Shock waves, *43.25.C, *43.40.J
 -aeroacoustics, *43.28.M
 -chemical reaction kinetics, 82.40.F
 -fluid dynamics, 47.40.N
 -interplanetary, 96.50.F
 -in plasma, 52.35.T
 -plasma production and heating by, 52.50.L
 -rheology, 83.50.T
 -seismology, 91.30.M
 -in solids, 62.50
 -structural mechanics, 46.30.M
Short-range order
 -amorphous materials, 61.43
 -magnetically ordered materials, 75.40
Shutters, optical, 42.79.A
Signal processing
 -in acoustics, 43.60
 -electronic circuits for, 07.50.Q
 -in optics, 42.79.S, T
Silicon, doping and ion implantation of, 61.72.T
Single-electron devices, 85.30.W
Single-electron tunneling, 73.23.H
Single-photon emission computed-tomography (SPECT), 87.59.T
Sintering (materials preparation), 81.20.E
Size effects
 -bulk matter, 72.30
 -thin films, 73.50.M
Skin effect, 72.30
Skyrmions, 12.39.D
Slip (evidence of dislocations), 61.72.H
Slip flows, 47.45.G
 -rheology, 83.50.L
Slug flow, 47.55.K
Slurries, 83.70.H
Small-angle scattering
 -neutron, 61.12.E
 -x-ray, 61.10.E
Snow, 92.40.R
Soil moisture, 92.40.L
Sol-gel processing, 81.20.F
Sol-gel transition, 83.80.J
Solar absorbers, 42.79.E
Solar cells and arrays, 84.60.J
Solar collectors and concentrators, 42.79.E
Solar flares, 96.60.R
Solar instruments, 95.55.E
Solar nebula, 96.10
Solar neutrinos, 26.65, 96.60.J
Solar particles and photons, 96.40.F
Solar physics, 96.60
Solar pulsations, 96.60.L
Solar streamers, 96.60.P
Solar system (see 96)
Solar waves, 96.60.L
Solar wind, 96.60.V
 -electric and magnetic fields, 96.50.B
 -interaction with magnetosphere, 94.30.V
 -interactions with planets, satellites and comets, 96.50.E
Soldering, 06.60.V
Solenoids, 84.32.H
Solid-fluid interfaces, 68.45
Solid helium, 67.80
Solid-liquid transitions, 64.70.D
Solid-phase epitaxy and growth, 81.15.N
Solid-solid interfaces, 68.35
Solid-solid transitions, 64.70.K
 -phase diagrams, 81.30
Solid-solution hardening, 81.40.C
Solid-state lasers, 42.55.P, R
Solid-state plasma
 -bulk matter, 72.30
 -thin films, 73.50.M
Solid-vapor transitions, 64.70.H
Solidification, 64.70.D, 81.30.F
Solitons
 -acoustical, *43.25.R
 -optical, 42.65.T
 -optical fibers, 42.81.D
 -in plasma, 52.35.S
Sols, 82.70.G
 -rheology, 83.70.H
Solubility, 64.75
Solutions (mixtures), 83.70.G
 -biomolecules, 87.15.D
 -macromolecular and polymer, 61.25.H
 -solubility, segregation and mixing, 64.75
 -thermodynamics of, 82.60.L
Solvent effects, 31.70.D
Sonar, *43.30.V, W
Sonic boom, *43.28.M
Sonography (rheological technique), 83.85.E
Sonoluminescence, 78.60.M
Sorption, kinetics of, 68.45.D
Sound
 -atmospheric, 43.28
 -biological effects, 87.51
 -generation and reproduction devices, 43.38
 -generation by fluid flow, *43.28.R
 -physical effects, 43.35
 -in plasma, 52.35.D
 -propagation, *43.20.B
  -macrosonics, *43.25.C
 -in quantum crystals, 67.80.C
 -recording and reproducing systems, *43.38.M, N, Q
 -reinforcement systems, *43.38.T
 -underwater, 43.30
 -velocity, *43.20.H
  -measurement of, *43.58.D
 -wall transmission, *43.55.R
Sound sources
 -intense, *43.25.V
 -localization of, *43.66.Q
 -outdoor, *43.28.H
Soundings, ionospheric, 94.20.T
South America, 93.30.J
Southern Ocean, 93.30.Q
Southern Oscillation, 92.10, 92.60
Space charge effects (dielectric materials), 77.50
Space charge-limited devices, 85.30.F
Space environment (biological effects), 87.65
Space geodetic surveys, 91.10.F
Space groups (crystal symmetry), 61.50.A
Space vehicles, 07.87
Spaceborne and space-research instruments, 07.85, 95.55
Spacetime
 -curved
  -classical fields in, 04.40
  -quantum field theory in, 04.62
 -Einstein-Maxwell, 04.40.N
 -with fluids, 04.40.N
 -topology, 04.20.G
Spacetime topology, 04.20.G
Spallation breeder reactors, 28.50.F
Spallation reactions, 25.40.S
Spark gaps (plasma switches), 52.75.K
Sparks, 52.80.M
Spatial dimensions, measurement of, 06.30.B
Spatial filters, 42.79.C
Special relativity, 03.30
Specific heat
 -liquids, 65.20
 -magnetic materials, 75.40
 -solids, 65.40
 -superconductors, 74.25.B
Speckles, 42.30.M
SPECT, 87.59.T
Spectral analysis, 82.80.C
Spectral classification, stellar, 97.10.R
Spectral filters, 42.79.C
Spectral lines
 -intensity, 32.70.F, 33.70.F
 -shape and shift, 32.70.J, 33.70.J
Spectral methods (computational techniques), 02.70.H
Spectral sources, electric-discharge, 52.80.Y
Spectrochemical analysis, 82.80.C
Spectrometers
 -electron, 07.81
 -gamma-ray, 07.85.N
 -infrared, 07.57.T
 -ion, 07.81
 -magnetic resonance, 07.57.P
 -microwave and radiowave, 07.57.P
 -for nuclear physics, 29.30
 -visible and ultraviolet, 07.60.R
 -x-ray, 07.85.N
Spectrophotometry
 -astronomical techniques, 95.75.F
 -chemical analysis, 82.80.C
Spectroscopy
 -in astronomy, 95.55.Q, 95.75.F
 -in atomic and molecular physics, 39.30
 -chemical analysis, 82.80
 -in-beam (see 23)
 -laser, 42.62.F
 -optical, 07.60.R
  -time-resolved, 78.47
Speech
 -perception, 43.71
 -processing, 43.72
 -production, 43.70
Spheromak, 52.55.H
Spicules, 96.60.N
Spin-density waves, 75.30.F
Spin diffusion, 75.40.G
Spin echo, 76.60.L
Spin fluctuations (superconductivity), 74.20.M
Spin-glass models, 75.10.N
Spin glasses, magnetic properties of, 75.50.L
Spin Hamiltonians, 75.10.D
Spin-lattice relaxation, 76.60.E
Spin-orbit coupling (condensed matter), 71.70.E
Spin ordering, 75.25
Spin-polarized hydrogen and helium, 67.65
Spin waves, 75.30.D
 -at magnetic critical points, 75.40.G
 -resonance, 76.50
Spinodal decomposition, 64.75, 81.30
Spinor structure, 04.20.G
Spiral galaxies, 98.52.N, 98.56.N
Spontaneous fission, 25.85.C
Spontaneous symmetry breaking
 -gauge symmetries, 11.15.E
 -other symmetries, 11.30.Q
Sports, physics of, 01.80
Spray coating techniques, 52.75.R, 81.15.R
Sputtering
 -atom, molecule, and ion impact, 79.20.R
 -etching, 81.65.C
 -film deposition, 81.15.C
Squeezed states, 42.50.D
SQUID devices, 85.25.D
Stacking faults, 61.72.N
Standards
 -acoustical, *43.15
 -frequency (astronomical), 95.55.S
 -metrology, 06.20.F
 -optical, 42.72
 -in physiological optics, 42.66.Q
Standing waves, acoustic
 -linear, *43.20.K
 -nonlinear, *43.25.G
Stark effect
 -atoms, 32.60
 -condensed matter, 71.70.E
 -molecules, 33.55.B
Stark shift, dynamic, 42.50.H
Stars
 -binary and multiple, 97.80
 -characteristics and properties, 97.10
 -formation, 97.10.B
 -late stages of evolution, 97.60
 -normal, 97.20
 -relativistic, 04.40.D
 -variable and peculiar, 97.30
State-to-state scattering analysis, 34.50.P
Static electrification, 41.20.C, 73.40
Statistical mechanics, 05.20
 -displacive phase transitions, 63.70
 -lattice vibrations, 63.70
 -phase transitions in model systems, 64.60.C
 -quantum, 05.30
Statistical models
 -atomic physics, 31.15.B
 -nuclear reactions, 24.10.P
 -strong interactions, 12.40.E
Statistical physics (see 05)
Statistical theories
 -atomic and molecular collisions, 34.10
 -chemical kinetics, 82.20.D
 -foundations of, 02.50.K
 -nuclear reactions, 24.60
 -strong interactions, 12.40.E
Statistics, 02.50
Stellar clusters and associations, 98.20
Stellar motion, 97.10
Stellar seismology, 97.10.S
Stellar systems, 98.52
Stellar winds, 97.10.M
Stellarators, 52.55.H
Stereochemistry
 -biomolecules, 87.15.B
 -molecular physics, 33.15.B
Stereotactic radiosurgery, 87.53.L
Stimulated emission
 -condensed matter, 78.45
 -laser theory, 42.55.A
Stimulated scattering
 -Brillouin and Rayleigh, 42.65.E
 -Raman, 42.65.D
Stochastic analysis, 02.50
Stochastic models
 -atomic and molecular collisions, 34.10
 -chemical kinetics, 82.20.F
Stochastic processes, 05.40
Stoichiometry, 61.50.N
Stokes flow, 83.10
Stopping power, 34.50.B, 61.85
Storage rings, 29.20.D
Storage tubes, 84.47
Storms, 92.60.Q
Strain-induced level splitting, 71.70.F
Strain-induced piezoelectricity, 77.65.L
Strains
 -measurement of, 07.10.P
 -solids, 62.20
 -thin films, 68.60.B
Strange particles, 14.20.J, 14.40
Stratified flows, 47.55.H
Stratosphere, 94.10.D
Streamflow, 92.40.F
Stress corrosion cracking, 62.40.M
Stress measurement, 07.10.L
Stress relaxation, 62.40, 81.40.J, 83.50.B
Stress-strain relations, 46.30, 62.20.F, 81.40.J
Strings
 -cosmic, 98.80.C
  -extended classical solutions, 11.27
 -fundamental, 11.25
Strip lines, 84.40.A
Strong-field excitation (quantum optics), 42.50.H
Strong interactions
 -electromagnetic corrections, 13.40.K
 -models, 12.40
 -quantum chromodynamics, 12.38
 -quark models, 12.39
 -in unified theories, 12.10.D
Strongly correlated electron systems, 71.27
Structural acoustics, 43.40
Structural mechanics (shells, plates, and beams), 46.30
Structure
 -amorphous metals and semiconductors, 61.43.D
 -biomolecules, 87.15.B
 -clusters, 36.40.M, 61.46
 -crystalline solids, 61.66
 -dendrites, 68.70
 -disordered solids, 61.43
 -fractals, 61.43
 -fullerenes, 61.46
 -galaxies, 98.62.L
 -glasses, 61.43.F
 -irradiation effects on, 61.80
 -liquid crystals, 61.30
 -liquids, 61.20, 61.25
 -multilayers, 68.65
 -nanoparticles, 61.46
 -quantum crystals, 67.80.C
 -quasicrystals, 61.44
 -solid surfaces, 68.35.B
 -stellar, 97.10.C
 -superlattices, 68.65
 -thin films, 68.55.J
 -whiskers, 68.70
SU groups
 -nuclear physics, 21.60.F
 -particle physics, 11.30.H, L
Sublimation, 64.70.H
Submillimeter wave receivers and detectors, 07.57.K
Submillimeter wave sources, 07.57.H
Subsonic flows, 47.40.D
Sum rules, 11.55.H
Summer schools, 01.30.B
Sun
 -characteristic and properties, 96.60
 -cosmic rays, 96.40.K
 -radiation (meteorology), 92.60.V
Sunspots, 96.60.Q
Superconducting cables, 84.70
Superconducting devices, 85.25
Superconducting films, 74.76
Superconducting integrated circuits, 85.25.N
Superconducting junctions (SN and SNS), 74.80.F
Superconducting magnets, 85.25.L
Superconducting materials, 74.70, 74.72
Superconducting wires, fibers, and tapes, 85.25.K
Superconductivity (see 74)
Superconductor-insulator transitions, 74.20.M
Supercooling (see 64)
Superexchange interactions, 75.30.E
Superfluidity
 -helium-3, 67.57
 -helium-4, 67.40
 -hydrodynamic aspects, 47.37
 -mixed systems, 67.60
Superfluorescence, 42.50.F
Supergiant stars, 97.20.P
Supergravity, 04.65
Superheavy elements
 -properties, 27.90
 -reactions and scattering, 25.70, 25.75
Superionic conducting materials, 66.30.H
Superlattices
 -electron states, 73.20.D
 -magnetic properties, 75.70.C
 -optical properties, 78.66
 -photoemission and photoelectron spectra, 79.60.J
 -structure and nonelectronic properties, 68.65
 -superconductivity, 74.80.D
Supermagnetism, 75.50.V
Supernova remnants
 -external galaxies, 98.38.M
 -Milky Way, 98.58.M
Supernovae, 97.60.B
 -evolution, nuclear aspects of, 26.50
 -nucleosynthesis, 26.30
Superplasticity, 62.20.F
Superradiance, 42.50.F
Supersaturation measurement, 82.20
Supersonic flows, 47.40.K
Supersymmetric models, 12.60.J
Supersymmetric partners of known particles, 14.80.L
Supersymmetry, 11.30.P
Surface acoustic wave devices, 85.50
 -superconducting, 85.25.Q
 -transducers, *43.38.R
Surface acoustic waves
 -effect of nonlinearity on, *43.25.F
 -piezoelectrics, 77.65.D
 -surfaces and interfaces, *43.35.P, 68.35.G
Surface barrier devices, 85.30.H
Surface cleaning, 81.65.C
Surface collisions, 34.50.D, 79.20.R
Surface conductivity, 73.25
Surface diffusion, 68.35.F
Surface double layers, 73.30
Surface dynamics, 68.35.J
Surface-enchanced Raman scattering (SERS), 82.65.P, 82.80.C
Surface energy
 -fluids, 68.10.C
 -solids, 68.35.M
Surface flows, 83.50.L
Surface hardening, 81.65.L
Surface magnetism, 75.30.P
Surface patterning, 81.65.C
Surface phase transitions, 68.35.R
Surface plasmons, 73.20.M
Surface reactions, 82.65.J, Y
Surface sheath (superconductivity), 74.60.E
Surface states, 73.20
Surface structure, 68.35.B
Surface tension, 68.10.C
Surface treatments, 81.65
Surface waves
 -oceanography, 92.10.H
 -seismology, 91.30.F
Surfaces (see 68)
 -grinding (optical elements), 42.86
 -optical properties, 78.66
 -reactions, 82.65.J
 -thermodynamics, 82.65.D
Surfactants, 83.70
Surveys, 01.30.R
Susceptibility, magnetic, 75.40.C
 -biological tissues, 87.40
 -at magnetic critical points, 75.40.G
 -magnetic materials, 75.30.C
Susceptibility, optical, 42.65.A
Suspensions, 82.70.K
 -dielectric properties, 77.84.N
 -fluid flows, 47.15.P, 47.55.K
 -rheology, 83.70.H
Swelling, polymers, 61.25.H
Switches
 -electrical, 82.32.D
 -optical, 42.79.T
 -plasma, 52.75.K
Switching
 -nonlinear optics, 42.65.P
 -piezoelectrics, 77.80.F
Symmetry
 -crystal, 61.50.A
 -molecular, 33.15.B
 -in nuclear processes, 24.80
 -nuclear tests of, 24.80
 -theory of fields and particles, 11.30
Symmetry breaking, 11.30.Q
 -gauge field theory, 11.15.E
Synaptic transmission, 87.22.J
Synchrocyclotrons, 29.20.M
Synchrotron radiation
 -instrumentation, 07.85.Q
 -by moving charges, 41.60.A
 -in spin-arrangement determinations, 75.25
Synchrotrons, 29.20.L
Synthetic aperture radar (SAR), 84.40.X