Volume 76, Issue 4

August 1949

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ARTICLES

The Elastic Scattering of Electrons by Neutral Hydrogen Atoms by the Variational Method

Su-Shu Huang

Phys. Rev. 76, 477 (1949) - Published 15 August, 1949

Neutrons from $C (d, n) N$ and $Cu (d, n) Zn$

J. C. Grosskreutz

Phys. Rev. 76, 482 (1949) - Published 15 August, 1949

Fading of Proton Tracks in Vacuum

K. B. Mather

Phys. Rev. 76, 486 (1949) - Published 15 August, 1949

The Time Distribution of Decay Electrons from Mesons Stopped in Magnesium at 3500 Meter Altitude

A. H. Benade and R. D. Sard

Phys. Rev. 76, 488 (1949) - Published 15 August, 1949

Absolute Speed Gauge for High Voltage Particles

W. Altar and M. Garbuny

Phys. Rev. 76, 496 (1949) - Published 15 August, 1949

An Absolute Calibration of the ${Li}^{7} (p, n)$ Threshold Voltage

W. E. Shoupp, B. Jennings, and W. Jones

Phys. Rev. 76, 502 (1949) - Published 15 August, 1949

On the Knock-On Secondaries of Penetrating Particles

W. W. Brown, A. S. McKay, and E. D. Palmatier

Phys. Rev. 76, 506 (1949) - Published 15 August, 1949

Penetrating Showers

W. B. Fretter

Phys. Rev. 76, 511 (1949) - Published 15 August, 1949

On the Mechanism of Production of the Neutron Component of the Cosmic Radiation

Vanna Cocconi Tongiorgi

Phys. Rev. 76, 517 (1949) - Published 15 August, 1949

Absorption of 17.6 Mev Gamma-Rays in C, Al, Cu, Sn, and Pb

R. L. Walker

Phys. Rev. 76, 527 (1949) - Published 15 August, 1949

Capture Gamma-Ray Studies

H. E. Kubitschek and S. M. Dancoff

Phys. Rev. 76, 531 (1949) - Published 15 August, 1949

Penetration and Diffusion of Hard X-Rays through Thick Barriers. I. The Approach to Spectral Equilibrium

H. A. Bethe, U. Fano, and P. R. Karr

Phys. Rev. 76, 538 (1949) - Published 15 August, 1949

Polarization Effects in $n - p$ and $p - p$ Scattering

Lincoln Wolfenstein

Phys. Rev. 76, 541 (1949) - Published 15 August, 1949

Radiation from a Uniformly Accelerated Charge

D. L. Drukey

Phys. Rev. 76, 543 (1949) - Published 15 August, 1949

The Variation of the Adiabatic Elastic Constants of KCl, NaCl, CuZn, Cu, and Al with Pressure to 10,000 Bars

David Lazarus

Phys. Rev. 76, 545 (1949) - Published 15 August, 1949

Cathode Field in Diodes under Partial Space-Charge Conditions

Henry F. Ivey

Phys. Rev. 76, 554 (1949) - Published 15 August, 1949

Non-Equilibrium Phenomena in a Bose-Einstein Gas. I. Transmission of Second Sound

William Band

Phys. Rev. 76, 558 (1949) - Published 15 August, 1949

Letters to the Editor

An Extension of the Theory of Mason and Matthias to the Low Temperature Transitions in BaTi $O_{3}$

H. J. Wellard

Phys. Rev. 76, 565 (1949) - Published 15 August, 1949

A Note on Plasma Oscillation

J. R. Pierce

Phys. Rev. 76, 565 (1949) - Published 15 August, 1949

Note on Meson Production

H. W. Lewis

Phys. Rev. 76, 566 (1949) - Published 15 August, 1949

Proximity Effects in the Measurement of Magnetic Susceptibility

M. C. Steele

Phys. Rev. 76, 566 (1949) - Published 15 August, 1949

Thermionic Electron Emission from Carbon

Henry F. Ivey

Phys. Rev. 76, 567 (1949) - Published 15 August, 1949

Beta-Ray Spectra

H. J. Lipkin

Phys. Rev. 76, 567 (1949) - Published 15 August, 1949

Two-Component Wave Equations

C. W. Kilmister

Phys. Rev. 76, 568 (1949) - Published 15 August, 1949

On the Temperature Dependence of Counter Characteristics in Self-Quenching G-M Counters

Om Parkash

Phys. Rev. 76, 568 (1949) - Published 15 August, 1949

On the Latitude Dependence of Nuclear Disintegrations and Neutrons at 30,000 Feet

J. A. Simpson and R. B. Uretz, Jr.

Phys. Rev. 76, 569 (1949) - Published 15 August, 1949

The Penetration of High Energy Electrons in Aluminum

F. L. Hereford and C. P. Swann

Phys. Rev. 76, 570 (1949) - Published 15 August, 1949

Hyperfine Structure of ${Te}^{125}$

G. R. Fowles

Phys. Rev. 76, 571 (1949) - Published 15 August, 1949

Spurious Counts in Geiger Counters and the Pretreatment of the Electrodes

J. D. Louw and S. M. Naudé

Phys. Rev. 76, 571 (1949) - Published 15 August, 1949

Radioactivity of ${Mo}^{91}$ and ${Mo}^{93}$

R. B. Duffield and J. D. Knight

Phys. Rev. 76, 573 (1949) - Published 15 August, 1949

Beta-Decay of ${In}^{115}$

P. R. Bell, B. H. Ketelle, and J. M. Cassidy

Phys. Rev. 76, 574 (1949) - Published 15 August, 1949

A New Germanium Photo-Resistance Cell

J. N. Shive

Phys. Rev. 76, 575 (1949) - Published 15 August, 1949

Neutron Induced Radioactivities in $V^{52}$ , ${Mo}^{99}$ , and $W^{185}$

J. M. Cork, H. B. Keller, and A. E. Stoddard

Phys. Rev. 76, 575 (1949) - Published 15 August, 1949

Photo-Disintegration of Deuterium by Seven- to Twenty-Mev X-Rays

Everett G. Fuller

Phys. Rev. 76, 576 (1949) - Published 15 August, 1949

The Thermal Neutron Absorption Cross Section of $K^{39}$

John L. Hansen and John E. Willard

Phys. Rev. 76, 577 (1949) - Published 15 August, 1949

Investigation of the Attractive Forces between the Persistent Currents in a Superconductor and the Lattice

E. U. Condon and E. Maxwell

Phys. Rev. 76, 578 (1949) - Published 15 August, 1949

Thresholds for Photo-Neutron Reactions in Mn, Zn, Zr, Mo, Cd, Pr, Nd, Au, Hg, Tl and Pb

A. O. Hanson, R. B. Duffield, J. D. Knight, B. C. Diven, and H. Palevsky

Phys. Rev. 76, 578 (1949) - Published 15 August, 1949

Analysis of the Temperature Coefficient of Shear Modulus of Aluminum

T'ing-Sui Kê

Phys. Rev. 76, 579 (1949) - Published 15 August, 1949

Infra-Red Absorption of Hydrogen and Carbon Dioxide Induced by Intermolecular Forces

H. L. Welsh, M. F. Crawford, and J. L. Locke

Phys. Rev. 76, 580 (1949) - Published 15 August, 1949

The Alpha-Particles Emitted in Fission

L. L. Green and D. L. Livesey

Phys. Rev. 76, 580 (1949) - Published 15 August, 1949

Magnetic Moments and Eddy Current Damping in Spherical Superconductors

J. J. Fritz, O. D. Gonzales, and H. L. Johnston

Phys. Rev. 76, 580 (1949) - Published 15 August, 1949

Tidal Effects in the F Layer

M. W. Jones and J. G. Jones

Phys. Rev. 76, 581 (1949) - Published 15 August, 1949

Gamma-Radiation from Deuteron Bombardment of ${Be}^{9}$

V. K. Rasmussen, W. F. Hornyak, and T. Lauritsen

Phys. Rev. 76, 581 (1949) - Published 15 August, 1949

High Energy Gamma-Radiation from ${Be}^{9}$ + $D^{2}$

C. Y. Chao, T. Lauritsen, and V. K. Rasmussen

Phys. Rev. 76, 582 (1949) - Published 15 August, 1949

On the Origin of Heavy Cosmic-Ray Particles

Lyman Spitzer, Jr.

Phys. Rev. 76, 583 (1949) - Published 15 August, 1949

Proceedings of the American Physical Society

Minutes of the Meeting at the University of Washington, at Seattle, Washington June 27-29, 1949

Phys. Rev. 76, 584 (1949) - Published 15 August, 1949