Volume 23, Issue 24

15 December 1969

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Editorial

Physical Review Abstracts

S. A. Goudsmit

Phys. Rev. Lett. 23, 1367 (1969) - Published 15 December, 1969

LETTERS

MEasurements of the Hydrogen-Deuterium Atomic Magnetic Moment Ratio and of the Deuterium Hyperfine Frequency

D. J. Larson, P. A. Valberg, and N. F. Ramsey

Phys. Rev. Lett. 23, 1369 (1969) - Published 15 December, 1969

Sound Absorption in Liquid Helium Below 0.6 K

R. K. Wehner and R. Klein

Phys. Rev. Lett. 23, 1372 (1969) - Published 15 December, 1969

Pressure-Induced Magnetic-Nonmagnetic Transition of Ce Impurities in La

M. B. Maple, J. Wittig, and K. S. Kim

Phys. Rev. Lett. 23, 1375 (1969) - Published 15 December, 1969

Two-Phonon Bound States

Morrel H. Cohen and J. Ruvalds

Phys. Rev. Lett. 23, 1378 (1969) - Published 15 December, 1969

Measurement of the de Haas-van Alphen Effect in Perovskite-Type Molybdenum Bronzes $A_{X} Mo O_{3}$

S. M. Marcus and T. A. Bither

Phys. Rev. Lett. 23, 1381 (1969) - Published 15 December, 1969

Mott Transition in Cr-Doped $V_{2}$ $O_{3}$

D. B. McWhan, T. M. Rice, and J. P. Remeika

Phys. Rev. Lett. 23, 1384 (1969) - Published 15 December, 1969

Interference of Light- and Heavy-Hole Contributions to the Electroreflectance Spectrum of Germanium

Paul Handler, Stephen Jasperson, and Stephen Koeppen

Phys. Rev. Lett. 23, 1387 (1969) - Published 15 December, 1969

Optical Observation of Magnetic-Field-Induced Spin Alignment in Antiferromagnetic EuTe

J. Feinleib and C. R. Pidgeon

Phys. Rev. Lett. 23, 1391 (1969) - Published 15 December, 1969

Magnons at Low and High Temperatures in the Planar Antiferromagnet $K_{2}$ Ni $F_{4}$

J. Skalyo, Jr., G. Shirane, R. J. Birgeneau, and H. J. Guggenheim

Phys. Rev. Lett. 23, 1394 (1969) - Published 15 December, 1969

Multiplet Splitting of Core-Electron Binding Energies in Transition-Metal Ions

C. S. Fadley, D. A. Shirley, A. J. Freeman, P. S. Bagus, and J. V. Mallow

Phys. Rev. Lett. 23, 1397 (1969) - Published 15 December, 1969

Elastic Electron Scattering by ${Pb}^{208}$ And New Information About the Nuclear Charge Distribution

J. Heisenberg, R. Hofstadter, J. S. McCarthy, I. Sick, B. C. Clark, R. Herman, and D. G. Ravenhall

Phys. Rev. Lett. 23, 1402 (1969) - Published 15 December, 1969

Effective Interactions and Collective Vibrations

Larry Zamick

Phys. Rev. Lett. 23, 1406 (1969) - Published 15 December, 1969

Nonconservation of Isospin in Direct Reactions

H. Vernon Smith, Jr. and H. T. Richards

Phys. Rev. Lett. 23, 1409 (1969) - Published 15 December, 1969

Proposed Experimental Test for the Mass Shift and the Peculiar Motion of an Electron in a Laser Beam

Yau W. Chan

Phys. Rev. Lett. 23, 1411 (1969) - Published 15 December, 1969

Continuous Breaking of Chiral Symmetry

S. Okubo and V. S. Mathur

Phys. Rev. Lett. 23, 1412 (1969) - Published 15 December, 1969

Very High-Energy Collisions of Hadrons

Richard P. Feynman

Phys. Rev. Lett. 23, 1415 (1969) - Published 15 December, 1969

Gauge Invariance, Duality, and $N_{α} - N_{γ}$ Exchange Degeneracy in Photoproduction

D. P. Roy

Phys. Rev. Lett. 23, 1417 (1969) - Published 15 December, 1969

ERRATA

$\frac{1}{f}$ Noise Observed on Semiconductor Surfaces.

O. Jäntsch and I. Feigt

Phys. Rev. Lett. 23, 1420 (1969) - Published 15 December, 1969

$M 1$ Admixtures in Transitions from the ${3_{γ}}^{+}$ and ${4_{γ}}^{+}$ Levels in ${}^{154}{Gd}$ .

J. H. Hamilton, A. V. Ramayya, and L. C. Whitlock