Volume 45, Issue 24

15 December 1980

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LETTERS

General Physics

Improved Ray Description of Wave Equations

Frank S. Henyey

Phys. Rev. Lett. 45, 1897 (1980) - Published 15 December, 1980

Elementary Particles and Fields

Quadratic Mass Relations in Topological Bootstrap Theory

C. E. Jones and J. Uschersohn

Phys. Rev. Lett. 45, 1901 (1980) - Published 15 December, 1980

Experimental Study of Heavy Charged Leptons and Search for Scalar Partners of Muons at PETRA ( $12 GeV <~ E_{c . m .} <~ 36.7 GeV$ )

D. P. Barber et al.

Phys. Rev. Lett. 45, 1904 (1980) - Published 15 December, 1980

$μ \to e γ$ in Theories with Dirac and Majorana Neutrino-Mass Terms

T. P. Cheng and Ling-Fong Li

Phys. Rev. Lett. 45, 1908 (1980) - Published 15 December, 1980

$\frac{1}{N}$ Interpretation of the $α$ Expansion in Composite Models

S. Nussinov

Phys. Rev. Lett. 45, 1912 (1980) - Published 15 December, 1980

Where is the Top Quark?

Sheldon L. Glashow

Phys. Rev. Lett. 45, 1914 (1980) - Published 15 December, 1980

Model of Flavor Unity

Jihn E. Kim

Phys. Rev. Lett. 45, 1916 (1980) - Published 15 December, 1980

Spontaneously Broken SU(3) Symmetry in a Laser

Y. Aharonov and J. M. Knight

Phys. Rev. Lett. 45, 1920 (1980) - Published 15 December, 1980

Acollinearity Distribution in Lepton-Hadron Scattering

J. Cleymans and M. Kuroda

Phys. Rev. Lett. 45, 1923 (1980) - Published 15 December, 1980

Spontaneously Broken Lepton Number and Cosmological Constraints on the Neutrino Mass Spectrum

Y. Chikashige, R. N. Mohapatra, and R. D. Peccei

Phys. Rev. Lett. 45, 1926 (1980) - Published 15 December, 1980

Nuclei

Energy Dissipation Process for 100-MeV Protons and the Nucleon-Nucleon Interactions in Nuclei

A. A. Cowley, C. C. Chang, H. D. Holmgren, J. D. Silk, D. L. Hendrie, R. W. Koontz, P. G. Roos, C. Samanta, and J. R. Wu

Phys. Rev. Lett. 45, 1930 (1980) - Published 15 December, 1980

Atoms and Molecules

Measurement of the $2 {}^{2}P_{\frac{3}{2}} - 2 {}^{2}S_{\frac{1}{2}}$ Fine-Structure Interval in Atomic Hydrogen

K. A. Safinya, K. K. Chan, S. R. Lundeen, and F. M. Pipkin

Phys. Rev. Lett. 45, 1934 (1980) - Published 15 December, 1980

Observation of the Auger Resonant Raman Effect

George S. Brown, Mau Hsiung Chen, Bernd Crasemann, and Gene E. Ice

Phys. Rev. Lett. 45, 1937 (1980) - Published 15 December, 1980

Off-Resonant $E 2$ Transition Observed in Two-Photon Absorption in Xe I

W. Gornik, S. Kindt, E. Matthias, H. Rinneberg, and D. Schmidt

Phys. Rev. Lett. 45, 1941 (1980) - Published 15 December, 1980

Classical Phenomenology and Applications

Critical Slowing Down of the Soret-Driven Convective Instability in a Two-Component Liquid Layer Heated from Below

J. K. Platten and J. Cl. Legros

Phys. Rev. Lett. 45, 1944 (1980) - Published 15 December, 1980

Condensed Matter: Structure, Etc.

Adsorption Sites and Bond Lengths of Iodine on Cu{111} and Cu{100} from Surface Extended X-Ray-Absorption Fine Structure

P. H. Citrin, P. Eisenberger, and R. C. Hewitt

Phys. Rev. Lett. 45, 1948 (1980) - Published 15 December, 1980

Field Splitting of the New Sound Attenuation Peak in ${}^{3}{He}$ - $B$

O. Avenel, E. Varoquaux, and H. Ebisawa

Phys. Rev. Lett. 45, 1952 (1980) - Published 15 December, 1980

Measurement of Anisotropy in the Dielectric Constant of ${}^{3}{He}$ - $A$

G. W. Swift, J. P. Eisenstein, and R. E. Packard

Phys. Rev. Lett. 45, 1955 (1980) - Published 15 December, 1980

X-Ray and Heat-Capacity Study of Molecular Oxygen Adsorbed on Graphite

P. W. Stephens, P. A. Heiney, R. J. Birgeneau, P. M. Horn, J. Stoltenberg, and O. E. Vilches

Phys. Rev. Lett. 45, 1959 (1980) - Published 15 December, 1980

Condensed Matter: Electronic Properties, Etc.

Surface-Photoelectric-Yield Spectrum of Indium below the Plasmon Energy

Guy Jezequel

Phys. Rev. Lett. 45, 1963 (1980) - Published 15 December, 1980

Electron-Spin-Resonance and Lattice-Parameter Study of Cerium Cubic Laves-Phase Compounds: Evidence for Intermediate-Valence State

G. E. Barberis, D. Davidov, C. Rettori, J. P. Donoso, I. Torriani, and F. C. G. Gandra

Phys. Rev. Lett. 45, 1966 (1980) - Published 15 December, 1980

Evidence for Bose-Einstein Statistics in an Exciton Gas

D. Hulin, A. Mysyrowicz, and C. Benoît à la Guillaume

Phys. Rev. Lett. 45, 1970 (1980) - Published 15 December, 1980

Competing Order Parameters in Quenched Random Alloys: ${Fe}_{1 - x} {Co}_{x} {Cl}_{2}$

Po-zen Wong, P. M. Horn, R. J. Birgeneau, C. R. Safinya, and G. Shirane

Phys. Rev. Lett. 45, 1974 (1980) - Published 15 December, 1980

Tunneling Theory of Charge-Density-Wave Depinning

John Bardeen

Phys. Rev. Lett. 45, 1978 (1980) - Published 15 December, 1980

Geophysics, Astronomy, and Astrophysics

Massive Neutrinos and the Large-Scale Structure of the Universe

J. R. Bond, G. Efstathiou, and J. Silk

Phys. Rev. Lett. 45, 1980 (1980) - Published 15 December, 1980

ERRATA

First Observation of the Ground-State Hyperfine-Structure Resonance of the Muonic Helium Atom.

H. Orth, K. -P. Arnold, P. O. Egan, M. Gladisch, W. Jacobs, J. Vetter, W. Wahl, M. Wigand, V. W. Hughes, and G. zu Putlitz

Phys. Rev. Lett. 45, 1984 (1980) - Published 15 December, 1980