Volume 75, Issue 4

February 1949

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ARTICLES

Relative Cross Sections for Nuclear Reactions Induced by High Energy Neutrons in Light Elements

William J. Knox

Phys. Rev. 75, 537 (1949) - Published 15 February, 1949

Thresholds for Several Photo-Nuclear Reactions

J. McElhinney, A. O. Hanson, R. A. Becker, R. B. Duffield, and B. C. Diven

Phys. Rev. 75, 542 (1949) - Published 15 February, 1949

Neutron-Proton Scattering at 90 Mev

Keith Brueckner, Walter Hartsough, Evans Hayward, and Wilson M. Powell

Phys. Rev. 75, 555 (1949) - Published 15 February, 1949

Magnetic Refraction of Neutrons at Domain Boundaries

D. J. Hughes, M. T. Burgy, R. B. Heller, and J. W. Wallace

Phys. Rev. 75, 565 (1949) - Published 15 February, 1949

Electron-Neutrino Angular Correlation in the Beta-Decay of ${He}^{6}$

James S. Allen, H. R. Paneth, and A. H. Morrish

Phys. Rev. 75, 570 (1949) - Published 15 February, 1949

Spin Dependence of Slow Neutron Scattering by Deuterons

E. Fermi and L. Marshall

Phys. Rev. 75, 578 (1949) - Published 15 February, 1949

Mixed Cosmic-Ray Showers at Sea Level

C. Y. Chao

Phys. Rev. 75, 581 (1949) - Published 15 February, 1949

East-West Asymmetry and Latitude Effect of Cosmic Rays at Altitudes up to 33,000 Feet

W. C. Barber

Phys. Rev. 75, 590 (1949) - Published 15 February, 1949

On the Magnetic Moments of $C^{13}$ , $F^{19}$ , ${Tl}^{203}$ , and ${Tl}^{205}$

H. L. Poss

Phys. Rev. 75, 600 (1949) - Published 15 February, 1949

Magnetic Moments of Sunspots

James W. Broxon

Phys. Rev. 75, 606 (1949) - Published 15 February, 1949

Relation of the Cosmic Radiation to Sunspot Magnetic Moments

James W. Broxon

Phys. Rev. 75, 612 (1949) - Published 15 February, 1949

The Radioactivities of Some High Mass Isotopes of Cobalt

Thomas J. Parmley, Burton J. Moyer, and Robert C. Lilly

Phys. Rev. 75, 619 (1949) - Published 15 February, 1949

Quantitative Measurements with Scintillation Counters

Hartmut Kallmann

Phys. Rev. 75, 623 (1949) - Published 15 February, 1949

Change in Density of Potassium Chloride Crystals upon Irradiation with X-Rays

I. Estermann, W. J. Leivo, and O. Stern

Phys. Rev. 75, 627 (1949) - Published 15 February, 1949

A Study of the High Frequency Fundamental Bands in the Spectrum of As $H_{3}$ and As $D_{3}$

Virginia Marie McConaghie and Harald H. Nielsen

Phys. Rev. 75, 633 (1949) - Published 15 February, 1949

Infra-Red Bands in the Spectrum of Difluoromethane

Hugh B. Stewart and Harald H. Nielsen

Phys. Rev. 75, 640 (1949) - Published 15 February, 1949

Quantum Electrodynamics. II. Vacuum Polarization and Self-Energy

Julian Schwinger

Phys. Rev. 75, 651 (1949) - Published 15 February, 1949

Non-Linear Field Theories

Peter G. Bergmann

Phys. Rev. 75, 680 (1949) - Published 15 February, 1949

Letters to the Editor

Emissions of Mesons in Cosmic Stars in Photographic Emulsions

Eric Pickup and Adair Morrison

Phys. Rev. 75, 686 (1949) - Published 15 February, 1949

The Dielectric Behavior of BaTi $O_{3}$ Single-Domain Crystals

Walter J. Merz

Phys. Rev. 75, 687 (1949) - Published 15 February, 1949

Neutrons from Deuteron Bombardment of ${Li}^{6}$

Ward Whaling, J. E. Evans, and T. W. Bonner

Phys. Rev. 75, 688 (1949) - Published 15 February, 1949

Note on the East-West Effect

A. T. Biehl, H. V. Neher, and Wm. C. Roesch

Phys. Rev. 75, 688 (1949) - Published 15 February, 1949

ARTICLES

The Double-Surface Transistor

John N. Shive

Phys. Rev. 75, 689 (1949) - Published 15 February, 1949

Letters to the Editor

Investigation of Hole Injection in Transistor Action

J. R. Haynes and W. Shockley

Phys. Rev. 75, 691 (1949) - Published 15 February, 1949

Quantitative Predictions from Dislocation Models of Crystal Grain Boundaries

W. Shockley and W. T. Read

Phys. Rev. 75, 692 (1949) - Published 15 February, 1949

On the Showers of Mesons and Nucleons

G. Wataghin

Phys. Rev. 75, 693 (1949) - Published 15 February, 1949

The Isotopic Constitution of Dysprosium

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

Phys. Rev. 75, 693 (1949) - Published 15 February, 1949

The Vertical Intensity at 10,000 Feet of Ionizing Particles That Produce Penetrating Showers

W. E. Hazen, C. A. Randall, and O. L. Tiffany

Phys. Rev. 75, 694 (1949) - Published 15 February, 1949

On Electromagnetic Diffraction through a Plane Screen

John W. Miles

Phys. Rev. 75, 695 (1949) - Published 15 February, 1949

${Hf}^{175}$ , a New Radioactive Isotope of Hafnium

Geoffrey Wilkinson and Harry G. Hicks

Phys. Rev. 75, 696 (1949) - Published 15 February, 1949

The Penetration of $μ$ -Meson Decay Electrons and Their Bremsstrahlung Radiation

E. P. Hincks and B. Pontecorvo

Phys. Rev. 75, 698 (1949) - Published 15 February, 1949

Nuclear Gyromagnetic Ratios of ${Be}^{9}$ , ${Rb}^{85}$ , ${Rb}^{87}$ , and ${Cs}^{133}$

John R. Zimmerman and Dudley Williams

Phys. Rev. 75, 699 (1949) - Published 15 February, 1949

The Chain ${}_{56}{Ba}^{130} (n, γ) {}_{56}{Ba}^{131} \to {}_{55}{Cs}^{131} \to {}_{54}{Xe}^{131}$

L. Yaffe, M. Kirsch, S. Standil, and Jean M. Grunlund

Phys. Rev. 75, 699 (1949) - Published 15 February, 1949

Table of Interplanar Spacings for Different Target Materials for the Back Reflection Region

Suzanne van Dijke Beatty

Phys. Rev. 75, 700 (1949) - Published 15 February, 1949

On Mesons $π$ and $μ$

R. E. Marshak

Phys. Rev. 75, 700 (1949) - Published 15 February, 1949

ERRATA

Erratum: Thermonuclear Reactions in the Expanding Universe

R. A. Alpher, R. Herman, and G. A. Gamow

Phys. Rev. 75, 701 (1949) - Published 15 February, 1949

Letters to the Editor

Measurement of the Half-Life and Average Energy of Tritium Decay

G. H. Jenks, J. A. Ghormley, and F. H. Sweeton

Phys. Rev. 75, 701 (1949) - Published 15 February, 1949

Proceedings of the American Physical Society

Minutes of the Meeting of the Metropolitan Section at Columbia University, New York City on October 22, 1948

Phys. Rev. 75, 703 (1949) - Published 15 February, 1949