Volume 48, Issue 4

25 January 1982

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LETTERS

General Physics

Gravitational Entropy in a Self-Consistent Thermodynamic Cosmological Solution

G. Horwitz and D. Weil

Phys. Rev. Lett. 48, 219 (1982) - Published 25 January, 1982

Elementary Particles and Fields

Supersymmetry, Cosmology, and New Physics at Teraelectronvolt Energies

Heinz Pagels and Joel R. Primack

Phys. Rev. Lett. 48, 223 (1982) - Published 25 January, 1982

Nuclei

Difference between Polarization and Analyzing Power for 800-MeV $n - p$ Elastic Scattering: Test of Time-Reversal Invariance

T. S. Bhatia, G. Glass, J. C. Hiebert, L. C. Northcliffe, W. B. Tippens, B. E. Bonner, J. E. Simmons, C. L. Hollas, C. R. Newsom, P. J. Riley, and R. D. Ransome

Phys. Rev. Lett. 48, 227 (1982) - Published 25 January, 1982

Atoms and Molecules

Exact-Path-Integral Treatment of the Hydrogen Atom

Roger Ho and Akira Inomata

Phys. Rev. Lett. 48, 231 (1982) - Published 25 January, 1982

Classical Phenomenology and Applications

Optical Autocorrelation Function of a 3.2-μm Free-Electron Laser

S. Benson, D. A. G. Deacon, J. N. Eckstein, J. M. J. Madey, K. Robinson, T. I. Smith, and R. Taber

Phys. Rev. Lett. 48, 235 (1982) - Published 25 January, 1982

Axial Magnetic-Field Effects in a Collective-Interaction Free-Electron Laser at Millimeter Wavelengths

R. K. Parker, R. H. Jackson, S. H. Gold, H. P. Freund, V. L. Granatstein, P. C. Efthimion, M. Herndon, and A. K. Kinkead

Phys. Rev. Lett. 48, 238 (1982) - Published 25 January, 1982

Fluids, Plasmas, and Electric Discharges

Hot-Electron Filamentation due to Self-Induced Magnetic Fields

T. Yabe, K. Mima, T. Sugiyama, and K. Yoshikawa

Phys. Rev. Lett. 48, 242 (1982) - Published 25 January, 1982

Magnetic Spectra and Electron Transport of Current-Carrying Plasmas

Cheng Chu

Phys. Rev. Lett. 48, 246 (1982) - Published 25 January, 1982

Drift-Wave Spectra Obtained from the Theory of Nonlinear Ion-Landau Damping in Sheared Magnetic Fields

André Rogister and Günter Hasselberg

Phys. Rev. Lett. 48, 249 (1982) - Published 25 January, 1982

Influence of Nonuniform Laser Intensities on Ablatively Accelerated Targets

Mark H. Emery, Joseph H. Orens, John H. Gardner, and Jay P. Boris

Phys. Rev. Lett. 48, 253 (1982) - Published 25 January, 1982

Absence of Fast Electrons in Laser-Irradiated Gas-Jet Targets

J. A. Tarvin, F. J. Mayer, D. C. Slater, Gar. E. Busch, G. Charatis, T. R. Pattinson, R. J. Schroeder, D. Sullivan, and D. L. Matthews

Phys. Rev. Lett. 48, 256 (1982) - Published 25 January, 1982

Test-Particle Transport in Stochastic Magnetic Fields: A Fluid Representation

Harvey A. Rose

Phys. Rev. Lett. 48, 260 (1982) - Published 25 January, 1982

Condensed Matter: Structure, Etc.

Nonlinear Lattice Dynamics of Crystals with Structural Phase Transitions

H. Bilz, H. Büttner, A. Bussmann-Holder, W. Kress, and U. Schröder

Phys. Rev. Lett. 48, 264 (1982) - Published 25 January, 1982

Time-Resolved Optical Transmission and Reflectivity of Pulsed-Ruby-Laser Irradiated Crystalline Silicon

Douglas H. Lowndes

Phys. Rev. Lett. 48, 267 (1982) - Published 25 January, 1982

Condensed Matter: Electronic Properties, Etc.

Far-Infrared Emission from Population-Inverted Hot-Carrier System in $p$ -Ge

S. Komiyama

Phys. Rev. Lett. 48, 271 (1982) - Published 25 January, 1982

de Haas—van Alphen Study of Coherent Magnetic Breakdown in Magnesium

J. W. Eddy, Jr. and R. W. Stark

Phys. Rev. Lett. 48, 275 (1982) - Published 25 January, 1982

Evidence for Direct Optical Interband Transitions in Isochromat Spectra from Pt Single-Crystal Surfaces

G. Denninger, V. Dose, and H. P. Bonzel

Phys. Rev. Lett. 48, 279 (1982) - Published 25 January, 1982

$k$ -Resolved Inverse Photoemission from Cu(001) and Ni(001)

D. P. Woodruff and N. V. Smith

Phys. Rev. Lett. 48, 283 (1982) - Published 25 January, 1982

Cross-Disciplinary Physics

Is There a Fundamental Bound on the Rate at Which Information Can Be Processed?

David Deutsch

Phys. Rev. Lett. 48, 286 (1982) - Published 25 January, 1982

ERRATA

Experimental S $F_{6}^{-}$ / S $F_{6}$ and ${Cl}^{-}$ / CF ${Cl}_{3}$ Electron-Attachment Cross Sections in the Energy Range 0-200 meV

Ara Chutjian

Phys. Rev. Lett. 48, 289 (1982) - Published 25 January, 1982

Influence of Singlet-Triplet Mixing on the Hyperfine Structure of $5 s n d$ Rydberg States in ${}^{87}{Sr}$

R. Beigang, E. Matthias, and A. Timmermann

Phys. Rev. Lett. 48, 290 (1982) - Published 25 January, 1982

Naturalness and Fermion Mass Relations

Probir Roy