photoelectron spectra   33.60.-q  
photoelectron spectra # photoemission and    79.60.-i  
photoelectron spectra # ultraviolet and vacuum ultraviolet    33.60.Cv  
photoelectron spectra # x-ray    33.60.Fy  
photoelectron spectroscopy # electron and    87.64.Lg  
photoemission and photoelectron spectra   79.60.-i  
photofission   25.85.Jg  
photogrammetry   91.10.Lh  
photographic instruments; xerography # photography,    07.68.+m  
photography and photometry (including microlensing techniques)   95.75.De  
photography, photographic instruments; xerography   07.68.+m  
photoionization of atoms and ions   32.80.Fb  
photoionization, and photodetachment # autoionization,    33.80.Eh  
photoionization; luminescence # spectra, photodissociation, and    87.15.Mi  
photoluminescence   78.55.-m  
photometers, radiometers, and colorimeters   07.60.Dq  
photometric and spectroscopic detection; coronographic detection; interferometric detection   97.82.Cp  
photometric, polarimetric, and spectroscopic instrumentation   95.55.Qf  
photometry (including microlensing techniques) # photography and    95.75.De  
photomultipliers; phototubes and photocathodes   85.60.Ha  
photon absorption and scattering   25.20.Dc  
photon and charged-lepton interactions with hadrons   13.60.-r  
photon and electron emission; neutralization of ions # interactions of atoms and molecules with surfaces;    34.50.Dy  
photon dosimetry: measurements   87.53.Dq  
photon dosimetry: theory and algorithms   87.53.Bn  
photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency # optical transient phenomena: quantum beats,    42.50.Md  
photon emission computed tomography (SPECT) # single    87.58.Ce  
photon interactions with atoms   32.80.-t  
photon interactions with molecules   33.80.-b  
photon statistics and coherence theory   42.50.Ar  
photon stimulated desorption   68.43.Tj  
photon-magnon interactions) # polaritons (including photon-phonon and    71.36.+c  
photon-phonon and photon-magnon interactions) # polaritons (including    71.36.+c  
photon-stimulated and electron-stimulated desorption   79.20.La  
photonic bandgap materials   42.70.Qs  
photons   14.70.Bh  
photons # atomic properties and interactions with    32.  
photons # coherent control of atomic interactions with    32.80.Qk  
photons # energetic solar particles and    96.40.Fg  
photons # molecular properties and interactions with    33.  
photons # other topics in atomic properties and interactions of atoms with    32.90.+a  
photons # other topics in molecular properties and interactions with    33.90.+h  
photons, or other nonhadronic particles # inclusive production with identified leptons,    13.85.Qk  
photonuclear reactions   25.20.-x  
photoproduction reactions   25.20.Lj  
photorefractive and semiconductor materials # other nonlinear optical materials;    42.70.Nq  
photorefractive effect # phase conjugation, optical mixing, and    42.65.Hw  
photoresistors # photodiodes; phototransistors;    85.60.Dw  
photoresistors) # conductors, resistors (including thermistors, varistors, and    84.32.Ff  
photosphere, granulation   96.60.Mz  
photospheres, chromospheres, coronae, magnetospheres); radiative transfer; opacity and line formation # stellar atmospheres (   97.10.Ex  
photosynthesis   92.20.Lw  
photothermal effects # thermooptical and    78.20.Nv  
photothermal, and optogalvanic spectroscopic methods) # energy-conversion spectro-analytical methods (e.g., photoacoustic,    82.80.Kq  
phototransistors; photoresistors # photodiodes;    85.60.Dw  
phototubes and photocathodes # photomultipliers;    85.60.Ha  
photovoltaic effects # photoconduction and    72.40.+w  
physical adsorption) # films (including    67.70.+n  
physical chemistry and chemical physics   82.  
physical chemistry and chemical physics # other topics in    82.90.+j  
physical chemistry and chemical physics) # nonequilibrium and irreversible thermodynamics (see also 82.40.Bj oscillations, chaos, and bifurcations in    05.70.Ln  
physical effects of sound # ultrasonics, quantum acoustics, and    43.35.+d  
physical gels and microgels   83.80.Kn  
physical methods of analysis # chemical analysis and related    82.80.-d  
physical properties # biomolecules: structure and    87.15.-v  
physical properties # other nonelectronic    68.60.Wm  
physical properties (abundances, electron density, magnetic fields, scintillation, scattering, kinematics, dynamics, turbulence, etc.)   98.38.Am  
physical properties (abundances, electron density, magnetic fields, scintillation, scattering, kinematics, dynamics, turbulence, etc.)   98.58.Ay  
physical properties of polymers   82.35.Lr  
physical properties of rocks and minerals   91.60.-x  
physical properties of seawater   92.10.Bf  
physical properties of thin films, nonelectronic   68.60.-p  
physical radiation effects, radiation damage   61.80.-x  
physical radiation effects, radiation damage) # radiation treatment (particle and electromagnetic) (see also 61.80.-x    81.40.Wx  
physicochemical properties   92.20.Mx  
physics # aeronomy and magnetospheric    94.  
physics # atomic and molecular    30.  
physics # biological and medical    87.  
physics # computers in experimental    07.05.-t  
physics # experimental methods and instrumentation for elementary-particle and nuclear    29.  
physics # general    01.55.+b  
physics # instrumentation and techniques for atomic and molecular    39.  
physics # interdisciplinary applications of    89.20.-a  
physics # ionizing-radiation therapy    87.53.-j  
physics # mathematical methods in    02.  
physics # neutron    28.20.-v  
physics # non-ionizing radiation therapy    87.54.-n  
physics # nuclear    20.  
physics # other areas of applied and interdisciplinary    89.  
physics # other instrumentation and techniques for atomic and molecular    39.90.+d  
physics # other topics in aeronomy and magnetospheric    94.90.+m  
physics # other topics in areas of applied and interdisciplinary    89.90.+n  
physics # other topics in biological and medical    87.90.+y  
physics # other topics in mathematical methods in    02.90.+p  
physics # other topics in physical chemistry and chemical    82.90.+j  
physics # other topics in solid Earth    91.90.+p  
physics # physical chemistry and chemical    82.  
physics # solar    96.60.-j  
physics # solid Earth    91.  
physics # spectroscopic and microscopic techniques in biophysics and medical    87.64.-t  
physics (effects of accelerations, weightlessness, and space environment) # aerospace bio- and medical    87.65.+y  
physics (excluding electron correlation calculations) # calculations and mathematical techniques in atomic and molecular    31.15.-p  
physics and astronomy # instruments, apparatus, and components common to several branches of    07.  
physics and astronomy # measurements common to several branches of    06.30.-k  
physics and astronomy # other topics in instruments, apparatus, and components common to several branches of    07.90.+c  
physics and nonlinear dynamics # computational methods in statistical    05.10.-a  
physics and related areas of science and technology # interdisciplinary    80.  
physics aspects of novae, supernovae, and other explosive environments # nuclear    26.50.+x  
physics education research (cognition, problem solving, etc.)   01.40.Fk  
physics experimental methods and instrumentation # other topics in elementary-particleand nuclear    29.90.+r  
physics literature and publications   01.30.-y  
physics of black holes   04.70.-s  
physics of crystal growth # methods of crystal growth;    81.10.-h  
physics of crystal growth, crystal morphology and orientation # theory and models of crystal growth;    81.10.Aj  
physics of elementary particles and fields # the    10.  
physics of gases   51.  
physics of gases # other topics in the    51.90.+r  
physics of gases, plasmas and electricity discharges   50.  
physics of plasmas and electric discharges   52.  
physics of plasmas and electric discharges # other topics in    52.90.+z  
physics of plate tectonics   91.45.-c  
physics of sports   01.80.+b  
physics of the ionosphere   94.20.-y  
physics of the magnetosphere   94.30.-d  
physics of the neutral atmosphere   94.10.-s  
physics of the oceans   92.10.-c  
physics of toys   01.50.Wg  
physics organizational activities   01.10.Hx  
physics) # computational methods in continuum mechanics (see also 02.70.-c computational techniques in mathematical methods in    46.15.-x  
physics) # intense particle beams and radiation sources (see also 29.25.-t and 29.27.-a in instrumentation for particle and nuclear    52.59.-f  
physics) # magnetic double resonances and cross effects (see also 33.40.+f multiple resonances in atomic and molecular    76.70.-r  
physics) # Moessbauer effect; other y-ray spectroscopy (see also 33.45.+x Moessbauer spectra - in atomic and molecular    76.80.+y  
physics) # nonequilibrium and irreversible thermodynamics (see also 82.40.Bj oscillations, chaos, and bifurcations in physical chemistry and chemical    05.70.Ln  
physics) # wave propagation, transmission and absorption (see also 41.20.Jb - in electromagnetism; for propagation in atmosphere, see 42.68.Ay; see also 52.40.Db, 52.38.-r - in plasma    42.25.Bs  
physics, thermodynamics, and nonlinear dynamical systems # other topics in statistical    05.90.+m  
physics, thermodynamics, and nonlinear dynamical systems # statistical    05.  
physics; stratus and cumulus clouds # cloud    92.60.Nv  
physiological acoustics   43.64.+r  
physiological materials (e.g. blood, collagen, etc.)   83.80.Lz  
physiological optics   42.66.-p  
physiology of eye; optic-nerve structure and function   42.66.Ew  
physisorption: adsorbates on surfaces # chemisorption/   68.43.-h  
pi mesons # decays of    13.20.Cz  
pi mesons # decays of    13.25.Cq  
pi) reactions # (p,    25.40.Qa  
pi, K, and eta mesons   14.40.AQ  
piezoelectric and electrostrictive constants   77.65.Bn  
piezoelectric devices # dielectric, ferroelectric, and    85.50.-n  
piezoelectric fields # strain-induced    77.65.Ly  
piezoelectric, ferroelectric, and antiferroelectric materials # dielectric,    77.84.-s  
piezoelectricity and electromechanical effects   77.65.-j  
piezoelectrics # acoustoelectric effects and surface acoustic waves (SAW) in    77.65.Dq  
piezoelectrics, and ferroelectrics and their properties # dielectrics,    77.  
piezoelectrics, and ferroelectrics and their properties # other topics in dielectrics,    77.90.+k  
piezooptical, elastooptical, and acoustooptical effects; photoacoustic effects   78.20.Hp  
piezoresistance # low-field transport and mobility;    72.20.Fr  
pinch # theta    52.55.Ez  
pinch devices # Z-pinches, plasma focus and other    52.58.Lq  
pion charge-exchange reactions   25.80.Gn  
pion elastic scattering   25.80.Dj  
pion inclusive scattering and absorption   25.80.Ls  
pion inelastic scattering   25.80.Ek  
pion, and other elementary particle detectors; cosmic ray detectors # neutrino, muon,    95.55.Vj  
pion, and other elementary particles; cosmic rays # neutrino, muon,    95.85.Ry  
pion-baryon interactions   13.75.Gx  
pion-induced reactions   25.80.Hp  
pits, decoration, electron microscopy, x-ray topography, etc.) # direct observation of dislocations and other defects (etch    61.72.Ff  
plages # sunspots, faculae,    96.60.Qc  
planar or extended defects # stacking faults and other    61.72.Nn  
Planck and Vlasov equation # Fokker -    52.65.Ff  
Planck, Langevin, etc.) # stochastic analysis methods (Fokker -    05.10.Gg  
plane-wave, APS, LCAO, etc.) and related methodology (scattering methods, ASA, linearized methods) # basis sets (   71.15.Ap  
planetary nebulae   98.38.Ly  
planetary nebulae   98.58.Li  
planetary nebulae # faint blue stars (including blue stragglers), white dwarfs, degenerate stars, nuclei of    97.20.Rp  
planetary rings   96.30.Wr  
planetary systems # extrasolar    97.82.-j  
planetary, and deep-space probes # lunar,    95.55.Pe  
planetary, asteroid, cometary, and satellite characteristics and properties   96.35.-j  
planets # substellar companions;    97.82.Fs  
planets) # asteroids (minor    96.30.Ys  
planets, satellites, and comets # solar wind interactions with    96.50.Ek  
planets, their satellites and rings; asteroids   96.30.-t  
plankton   92.20.Rb  
planning and construction # urban    89.65.Lm  
planning, optimization, tissue response factors, and doseromechanical- volume analysis # treatment    87.53.Tf  
plasma # electromagnetic (nonlaser) radiation interactions with    52.40.Db  
plasma # electron-hole drops and electron-hole    71.35.Ee  
plasma # quark-gluon    12.38.Mh  
plasma # solar wind    96.50.Ci  
plasma and collective effects in clusters   36.40.Gk  
plasma applications   52.77.-j  
plasma crystals # dusty or complex plasmas;    52.27.Lw  
plasma devices   52.75.-d  
plasma devices for generation of coherent radiation   52.59.Ye  
plasma diagnostic techniques and instrumentation   52.70.-m  
plasma diodes # magnetohydrodynamic generators and thermionic convertors;    52.75.Fk  
plasma dynamics and flow   52.30.-q  
plasma effects # high-frequency effects;    72.30.+q  
plasma focus # dense    52.59.Hq  
plasma focus and other pinch devices # Z-pinches,    52.58.Lq  
plasma heating by DC fields; ohmic heating, arcs   52.50.Nr  
plasma heating by microwaves; ECR, LH, collisional heating   52.50.Sw  
plasma heating by particle beams   52.50.Gj  
plasma heating by radio-frequency fields; ICR, ICP, helicons   52.50.Qt  
plasma instabilities   94.30.Gm  
plasma interactions (nonlaser)   52.40.-w  
plasma interactions with antennas; plasma-filled waveguides   52.40.Fd  
plasma kinetic equations   52.25.Dg  
plasma lifetime, particle and heat loss, energy balance, field structure, etc. # general theory and basic studies of    52.55.Dy  
plasma motion, convection, or circulation   94.20.Ww  
plasma motion, convection, or circulation   94.30.Fk  
plasma physics) # wave propagation, transmission and absorption (see also 41.20.Jb - in electromagnetism; for propagation in atmosphere, see 42.68.Ay; see also 52.40.Db, 52.38.-r - in    42.25.Bs  
plasma production and heating   52.50.-b  
plasma production and heating by laser beams (laser-foil, laser-cluster, etc.)   52.50.Jm  
plasma production and heating by shock waves and compression   52.50.Lp  
plasma properties   52.25.-b  
plasma propulsion # ion and    52.75.Di  
plasma reactions (including flowing afterglow and electric discharges)   82.33.Xj  
plasma sheaths   52.40.Kh  
plasma simulation   52.65.-y  
plasma sources   52.50.Dg  
plasma spray, arc welding, etc.) # high-pressure, high-current plasmas (   52.77.Fv  
plasma switches (e.g., spark gaps)   52.75.Kq  
plasma torches   52.75.Hn  
plasma turbulence   52.35.Ra  
plasma vorticity   52.35.We  
plasma) # discharges for spectral sources (including inductively coupled    52.80.Yr  
plasma-based ion implantation and deposition (see also 81.15.Jj ion and electron beam-assisted deposition)   52.77.Dq  
plasma-enhanced CVD, MOCVD, etc.) # chemical vapor deposition (including    81.15.Gh  
plasma-filled waveguides # plasma interactions with antennas;    52.40.Fd  
plasma-material interactions; boundary layer effects   52.40.Hf  
plasmapause   94.20.Pp  
plasmas # basic studies of specific kinds of    52.27.-h  
plasmas # electron-positron    52.27.Ep  
plasmas # elementary processes in    52.20.-j  
plasmas # impurities in    52.25.Vy  
plasmas # ionization of    52.25.Jm  
plasmas # laser-induced magnetic fields in    52.38.Fz  
plasmas # magnetized    52.25.Xz  
plasmas # magneto-plasma accelerated    52.59.Dk  
plasmas # magnetohydrodynamics and    95.30.Qd  
plasmas # multicomponent and negative-ion    52.27.Cm  
plasmas # neutrals in    52.25.Ya  
plasmas # nonneutral    52.27.Jt  
plasmas # particle beam interactions in    52.40.Mj  
plasmas # relativistic    52.27.Ny  
plasmas # self-focussing, channeling, and filamentation in    52.38.Hb  
plasmas # single-component, electron-positive-ion    52.27.Aj  
plasmas # strongly-coupled    52.27.Gr  
plasmas # thermodynamics of    52.25.Kn  
plasmas # two-fluid and multi-fluid    52.30.Ex  
plasmas (collisional, parametric, etc.) # laser light absorption in    52.38.Dx  
plasmas (plasma spray, arc welding, etc.) # high-pressure, high-current    52.77.Fv  
plasmas and electric discharges # other topics in physics of    52.90.+z  
plasmas and electric discharges # physics of    52.  
plasmas and electricity discharges # physics of gases,    50.  
plasmas and intense beams # waves, oscillations, and instabilities in    52.35.-g  
plasmas; plasma crystals # dusty or complex    52.27.Lw  
plasmasphere   94.20.Mm  
plasmons # exchange, correlation, dielectric and magnetic response functions,    71.45.Gm  
plasmons and other charge-density excitations) # collective excitations (including excitons, polarons,    73.20.Mf  
plasticity (including yield, ductility, and superplasticity) # deformation and    62.20.Fe  
plasticity, and creep # deformation,    81.40.Lm  
plasticity, viscoplasticity (see also 83.60.Bc, 83.60.Df, in rheology) # viscoelasticity,    46.35.+z  
plastics # polymers, elastomers, and    61.41.+e  
plastics; rubber; synthetic and natural fibers; organometallic and organic materials # polymers and    81.05.Lg  
plate tectonics   91.45.Dh  
plate tectonics # physics of    91.45.-c  
plate tectonics # tomography of    91.45.Qv  
platelet-reinforced metal-based composites # dispersion-reinforced, fiber-reinforced, and    81.05.Ni  
plates and shells # beams,    46.70.De  
plates, and polarizers # filters, zone    42.79.Ci  
plating # ion and electron beam-assisted deposition; ion    81.15.Jj  
platinum and palladium group (4d and 5d) ions and impurities (Zr-Ag and Hf-Au)   76.30.He  
Pluto   96.30.Sn  
Pluton emplacement   91.45.Yb  
pneumatic machinery # hydraulic and    47.85.Kn  
pneumodynamics # haemodynamics,    87.19.Uv  
Poincaré invariance # Lorentz and    11.30.Cp  
point # phase transitions and Curie    77.80.Bh  
point contact devices # surface barrier, boundary, and    85.30.Hi  
point defects (vacancies, interstitials, color centers, etc.) and defect clusters   61.72.Ji  
point defects, dislocations, surfaces, and other imperfections (including Kondo effect) # scattering by    72.10.Fk  
point phenomena # critical    05.70.Jk  
points # multicritical    64.60.Kw  
points, critical exponents # equilibrium properties near critical    64.60.Fr  
Poisson and Laplace equations, boundary-value problems # electrostatics;    41.20.Cv  
polar cap ionosphere   94.20.Kj  
polar regions   93.30.Sq  
polar wobble # rotational variations;    91.10.Nj  
polarimeters and ellipsometers   07.60.Fs  
polarimetric, and spectroscopic instrumentation # photometric,    95.55.Qf