Volume 21, Issue 6

5 August 1968

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LETTERS

Energies and Lifetimes of the Metastable Autoionizing $(1 s 2 s 2 p) {}^{4}P_{J}$ States of ${Li}^{6}$ and ${Li}^{7}$ ; Assignment of Li- $I^{b}$ Quartet Lines

P. Feldman, M. Levitt, and R. Novick

Phys. Rev. Lett. 21, 331 (1968) - Published 5 August, 1968

Identification of the Metastable Autoionizing States in Potassium with a New rf Spectroscopic Technique

G. Sprott and R. Novick

Phys. Rev. Lett. 21, 336 (1968) - Published 5 August, 1968

Method for Measuring the Cyclotron and Spin Resonance of Free Electrons

G. Graff, F. G. Major, R. W. H. Roeder, and G. Werth

Phys. Rev. Lett. 21, 340 (1968) - Published 5 August, 1968

Optical Rotatory Effect in the Nematic Liquid Phase of $p$ -Azoxyanisole

Richard Williams

Phys. Rev. Lett. 21, 342 (1968) - Published 5 August, 1968

Oscillations Present in Plasma-Electron Heating by an Electron Beam

I. Alexeff, G. E. Guest, D. Montgomery, R. V. Neidigh, and D. J. Rose

Phys. Rev. Lett. 21, 344 (1968) - Published 5 August, 1968

Calculation of $L$ Bands in KCl

L. J. Page, J. A. Strozier, Jr., and E. H. Hygh

Phys. Rev. Lett. 21, 348 (1968) - Published 5 August, 1968

Quantum Effects in Cyclotron Resonance in $p$ -type InSb

Kenneth J. Button, Benjamin Lax, and C. C. Bradley

Phys. Rev. Lett. 21, 350 (1968) - Published 5 August, 1968

Specific Heat of Dilute Cu(Fe) Alloys Far Below the Kondo Temperature

M. D. Daybell, W. P. Pratt, Jr., and W. A. Steyert

Phys. Rev. Lett. 21, 353 (1968) - Published 5 August, 1968

Conduction-Band Structure in Anthracene Determined by Photoemission

J. Dresner

Phys. Rev. Lett. 21, 356 (1968) - Published 5 August, 1968

Resistivity and Hall Effect in Superconducting Nb

A. T. Fiory and B. Serin

Phys. Rev. Lett. 21, 359 (1968) - Published 5 August, 1968

Anomalous Superconducting Behavior of Sn-Sn Tunnel Junctions with Impurities in the Insulating Oxide

L. Y. L. Shen

Phys. Rev. Lett. 21, 361 (1968) - Published 5 August, 1968

Resonant and Nonresonant Microwave Losses in TmFe $O_{3}$

F. B. Hagedorn, E. M. Gyorgy, R. C. LeCraw, J. C. Hensel, and J. P. Remeika

Phys. Rev. Lett. 21, 364 (1968) - Published 5 August, 1968

Melting in Argon at High Temperatures

R. K. Crawford and W. B. Daniels

Phys. Rev. Lett. 21, 367 (1968) - Published 5 August, 1968

High-Field Magnetization of Cerous Magnesium Nitrate: Implications to Low-Temperature Thermometry

S. J. Williamson and J. A. Cape

Phys. Rev. Lett. 21, 370 (1968) - Published 5 August, 1968

Electric Dipole Transition from the $2 f_{\frac{7}{2}}$ Isobaric Analog Resonance to the $2 d_{\frac{5}{2}}$ Ground State in ${}^{141}\Pr$

H. Ejiri, P. Richard, S. Ferguson, R. Heffner, and D. Perry

Phys. Rev. Lett. 21, 373 (1968) - Published 5 August, 1968

Magnetic Moments of Nuclear Isospin Doublets

Renzo Leonardi and Marco Rosa-Clot

Phys. Rev. Lett. 21, 377 (1968) - Published 5 August, 1968

Shell-Model Fragmentation of the ${Sc}^{49}$ Analog Levels

M. Divadeenam and William P. Beres

Phys. Rev. Lett. 21, 379 (1968) - Published 5 August, 1968

$t$ -Channel Regge Amplitude from $s$ -Channel Resonances

C. Goebel

Phys. Rev. Lett. 21, 383 (1968) - Published 5 August, 1968

Measurements of $π^{0}$ and $η^{0}$ Photoproduction at Incident Gamma-Ray Energies of 6.0-17.8 GeV

R. Anderson, D. Gustavson, J. Johnson, D. Ritson, W. G. Jones, D. Kreinick, F. Murphy, and R. Weinstein

Phys. Rev. Lett. 21, 384 (1968) - Published 5 August, 1968

High-Energy $π^{-} - p$ , $K^{-} - p$ , and $\bar{p} - p$ Elastic Scattering

A. Ashmore, C. J. S. Damerell, W. R. Frisken, R. Rubinstein, J. Orear, D. P. Owen, F. C. Peterson, A. L. Read, D. G. Ryan, and D. H. White

Phys. Rev. Lett. 21, 387 (1968) - Published 5 August, 1968

Structure in Backward Pion-Proton Elastic Scattering from 6 to 17 GeV/c

J. Orear, D. P. Owen, F. C. Peterson, A. L. Read, D. G. Ryan, D. H. White, A. Ashmore, C. J. S. Damerell, W. R. Frisken, and R. Rubinstein

Phys. Rev. Lett. 21, 389 (1968) - Published 5 August, 1968

Evidence for Linear Extrapolations of Baryon-Exchange Trajectories through Particle Mass Spectra

V. Barger and D. Cline

Phys. Rev. Lett. 21, 392 (1968) - Published 5 August, 1968

Gravitational Radiation from the Pulsars

J. Weber

Phys. Rev. Lett. 21, 395 (1968) - Published 5 August, 1968

Effect of the Anomalous Magnetic Moment of the Electron on Spontaneous Pair Production in a Strong Magnetic Field

R. F. O'Connell

Phys. Rev. Lett. 21, 397 (1968) - Published 5 August, 1968

Experimental Test of $C$ Invariance in $η \to π^{+} π^{-} γ$

M. Gormley, E. Hyman, W. Lee, T. Nash, J. Peoples, C. Schultz, and S. Stein

Phys. Rev. Lett. 21, 399 (1968) - Published 5 August, 1968

Experimental Test of $C$ Invariance in $η \to π^{+} π^{-} π^{0}$

M. Gormley, E. Hyman, W. Lee, T. Nash, J. Peoples, C. Schultz, and S. Stein

Phys. Rev. Lett. 21, 402 (1968) - Published 5 August, 1968

Analytic Structure of Energy Levels in a Field-Theory Model

Carl M. Bender and Tai Tsun Wu

Phys. Rev. Lett. 21, 406 (1968) - Published 5 August, 1968

Model for the Violation of $CP$ Invariance

T. Das

Phys. Rev. Lett. 21, 409 (1968) - Published 5 August, 1968

Implications of Unequal Charge Asymmetry in $K_{L}^{0} \to π^{\pm} e^{\mp} ν$ and $K_{L}^{0} \to π^{\pm} μ^{\mp} ν$

L. M. Sehgal

Phys. Rev. Lett. 21, 412 (1968) - Published 5 August, 1968

$A_{1} - π$ Mixing and Production of $A_{1}$ Mesons by Diffraction Dissociation of Pions

Mitchel J. Sweig and Walter W. Wada

Phys. Rev. Lett. 21, 414 (1968) - Published 5 August, 1968

ERRATA

Proton-Particle, Neutron-Hole Multiplets in ${Bi}^{208}$

W. P. Alford, J. P. Schiffer, and J. J. Schwartz

Phys. Rev. Lett. 21, 417 (1968) - Published 5 August, 1968

Physical Review Letters