Volume 71, Issue 8

April 1947

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ARTICLES

Electron Affinity of Positronium

Egil A. Hylleraas

Phys. Rev. 71, 491 (1947) - Published 15 April, 1947

Binding Energy of the Positronium Molecule

Egil A. Hylleraas and Aadne Ore

Phys. Rev. 71, 493 (1947) - Published 15 April, 1947

Photo-Neutron Sources and the Energy of the Photo-Neutrons

A. Wattenberg

Phys. Rev. 71, 497 (1947) - Published 15 April, 1947

Total Cross Sections Measured with Photo-Neutrons

R. Fields, B. Russell, D. Sachs, and A. Wattenberg

Phys. Rev. 71, 508 (1947) - Published 15 April, 1947

A Search for the Transmutation Products of Gamma-Meson Reactions Induced by 100-Mev X-Rays

N. A. Bonner, G. Freidlander, L. P. Pepkowitz, and M. L. Perlman

Phys. Rev. 71, 511 (1947) - Published 15 April, 1947

Absolute Energies of $K α$ -Radiation from Thick Targets of Silver

Paul Kirkpatrick and Albert V. Baez

Phys. Rev. 71, 521 (1947) - Published 15 April, 1947

Range Measurements of Alpha-Particles from $94^{239}$ and $94^{238}$

O. Chamberlain, J. W. Gofman, E. Segrè, and A. C. Wahl

Phys. Rev. 71, 529 (1947) - Published 15 April, 1947

Infra-Red Absorption in Formaldehyde beyond $10 μ$

Willard E. Singer

Phys. Rev. 71, 531 (1947) - Published 15 April, 1947

Experimental Evidence of the Viscous Behavior of Grain Boundaries in Metals

T'ing-Sui Kê

Phys. Rev. 71, 533 (1947) - Published 15 April, 1947

On the Momentum Operator in Wave Mechanics

Aurel Wintner

Phys. Rev. 71, 547 (1947) - Published 15 April, 1947

Letters to the Editor

Notes on the Wheeler-Feynman Theory

Carlton W. Berenda

Phys. Rev. 71, 550 (1947) - Published 15 April, 1947

Probability of Nuclear Meson-Absorption

George Gamow

Phys. Rev. 71, 550 (1947) - Published 15 April, 1947

Relative Moments of $H_{1}$ and $H_{3}$

F. Bloch, A. C. Graves, M. Packard, and R. W. Spence

Phys. Rev. 71, 551 (1947) - Published 15 April, 1947

Artificial Radioactive Isotopes of Polonium, Bismuth and Lead

J. J. Howland, D. H. Templeton, and I. Perlman

Phys. Rev. 71, 552 (1947) - Published 15 April, 1947

Auger Showers and the Comets

V. Rojansky

Phys. Rev. 71, 552 (1947) - Published 15 April, 1947

Validity of the Franck-Condon Principle in Collisions of the Second Kind

Roland E. Meyerott

Phys. Rev. 71, 553 (1947) - Published 15 April, 1947

The Elastic Constants of Sodium Chlorate

S. Bhagavantam and D. Suryanarayan

Phys. Rev. 71, 553 (1947) - Published 15 April, 1947

Analysis of High Energy X-Ray Spectra

G. C. Baldwin and G. S. Klaiber

Phys. Rev. 71, 554 (1947) - Published 15 April, 1947

Absorption of Methyl Alcohol and Methylamine for 1.25-Cm Waves

W. D. Hershberger and John Turkevich

Phys. Rev. 71, 554 (1947) - Published 15 April, 1947

Grain Growth in High Purity Aluminum

Paul A. Beck, Joseph C. Kremer, and L. Demer

Phys. Rev. 71, 555 (1947) - Published 15 April, 1947

Separation by Diffusion in Fields of Ultrasonic Waves

H. Frei and M. Schiffer

Phys. Rev. 71, 555 (1947) - Published 15 April, 1947

The Total Neutron Cross Section of Dysprosium and Neodymium

William J. Sturm and George P. Arnold

Phys. Rev. 71, 556 (1947) - Published 15 April, 1947

Temperature of the Upper Atmosphere

S. L. Seaton

Phys. Rev. 71, 557 (1947) - Published 15 April, 1947

Erratum: On the Disintegration of Negative Mesons [Phys. Rev. 71, 209 (1947)]

M. Conversi, E. Pancini, and O. Piccioni

Phys. Rev. 71, 557 (1947) - Published 15 April, 1947

The Collision of Neutrons with Deuterons and the Reality of Exchange Forces

H. S. W. Massey and R. A. Buckingham

Phys. Rev. 71, 558 (1947) - Published 15 April, 1947

The deHaas-van Alphen Effect in a Single Crystal of Zinc

Jules A. Marcus

Phys. Rev. 71, 559 (1947) - Published 15 April, 1947

Delayed Neutrons from ${Pu}^{239}$

Robert R. Wilson

Phys. Rev. 71, 560 (1947) - Published 15 April, 1947

Proton-Proton Scattering at 14.5 Mev

Robert R. Wilson, Edward J. Lofgren, J. Reginald Richardson, Byron T. Wright, and Robert S. Shankland

Phys. Rev. 71, 560 (1947) - Published 15 April, 1947

Neutron Cross Sections for Mercury Isotopes

Mark G. Inghram, David C. Hess, Jr., and Richard J. Hayden

Phys. Rev. 71, 561 (1947) - Published 15 April, 1947

Fine Structure of $H_{α}$

L. Giulotto

Phys. Rev. 71, 562 (1947) - Published 15 April, 1947

A Microwave Spectrograph

Richard H. Hughes and E. Bright Wilson, Jr.

Phys. Rev. 71, 562 (1947) - Published 15 April, 1947

Conductivity of Sodium-Ammonia Solutions

D. K. C. MacDonald, K. Mendelssohn, and A. J. Birch

Phys. Rev. 71, 563 (1947) - Published 15 April, 1947

Erratum: On the Scattering and Absorption of Particles by Atomic Nuclei [Phys. Rev. 71, 145 (1947)]

H. Feshbach, D. C. Peaslee, and V. F. Weisskopf

Phys. Rev. 71, 564 (1947) - Published 15 April, 1947

Atmospheric Temperatures from Infra-Red Emission Spectra of the Moon and Earth. I. The Ozone Layer

Arthur Adel

Phys. Rev. 71, 564 (1947) - Published 15 April, 1947