Volume 78, Issue 6

June 1950

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ARTICLES

Beta-Spectra of Gaseous $A^{41}$ and $O^{15}$

Harold Brown and Victor Perez-Mendez

Phys. Rev. 78, 649 (1950) - Published 15 June, 1950

Deuteron-Proton Scattering Using Photographic Techniques

F. A. Rodgers, H. A. Leiter, and P. G. Kruger

Phys. Rev. 78, 656 (1950) - Published 15 June, 1950

The Angular Distribution of Protons from the D—D Reaction at 10 Mev

H. A. Leiter, F. A. Rodgers, and P. G. Kruger

Phys. Rev. 78, 663 (1950) - Published 15 June, 1950

Proton-Proton Scattering at 5 Mev

R. E. Meagher

Phys. Rev. 78, 667 (1950) - Published 15 June, 1950

Correlation of Geomagnetic Cosmic-Ray Effects

H. V. Neher

Phys. Rev. 78, 674 (1950) - Published 15 June, 1950

Energy Transfer to Nucleons in Cosmic-Ray Stars at 95,000 Feet

H. L. Bradt and M. F. Kaplon

Phys. Rev. 78, 680 (1950) - Published 15 June, 1950

Disintegration of Nuclei by $π^{-}$ -Mesons

W. B. Cheston and L. J. B. Goldfarb

Phys. Rev. 78, 683 (1950) - Published 15 June, 1950

The Disintegration of ${Cu}^{61}$

George E. Owen, C. Sharp Cook, and Paul H. Owen

Phys. Rev. 78, 686 (1950) - Published 15 June, 1950

Properties of the $T^{3} (p, γ) {He}^{4}$ Reaction

H. V. Argo, H. T. Gittings, A. Hemmendinger, G. A. Jarvis, and R. F. Taschek

Phys. Rev. 78, 691 (1950) - Published 15 June, 1950

A Molecular Beam Resonance Method with Separated Oscillating Fields

Norman F. Ramsey

Phys. Rev. 78, 695 (1950) - Published 15 June, 1950

Magnetic Shielding of Nuclei in Molecules

Norman F. Ramsey

Phys. Rev. 78, 699 (1950) - Published 15 June, 1950

The Low States of ${Li}^{7}$

R. Avery and C. H. Blanchard

Phys. Rev. 78, 704 (1950) - Published 15 June, 1950

The Electric Quadrupole Moment of the Deuteron

G. F. Newell

Phys. Rev. 78, 711 (1950) - Published 15 June, 1950

A Hodoscope Study of Penetrating Cosmic-Ray Showers. I. Local Showers

Kurt Sitte

Phys. Rev. 78, 714 (1950) - Published 15 June, 1950

A Hodoscope Study of Penetrating Cosmic-Ray Showers. II. Extensive Showers

Kurt Sitte

Phys. Rev. 78, 721 (1950) - Published 15 June, 1950

The Maximum Range of High Energy Electrons in Aluminum and Copper

Frank L. Hereford and Charles P. Swann

Phys. Rev. 78, 727 (1950) - Published 15 June, 1950

Remarks on the Magnetic Scattering of Neutrons

H. Ekstein

Phys. Rev. 78, 731 (1950) - Published 15 June, 1950

Deuteron Photo-Effect at High Energies

L. I. Schiff

Phys. Rev. 78, 733 (1950) - Published 15 June, 1950

Photo-Disintegration of the Deuteron at High Energies

J. F. Marshall and E. Guth

Phys. Rev. 78, 738 (1950) - Published 15 June, 1950

Hyperfine Structure and Nuclear Spins of Tungsten and Tellurium

G. R. Fowles

Phys. Rev. 78, 744 (1950) - Published 15 June, 1950

The Lorentz Correction in Barium Titanate

J. C. Slater

Phys. Rev. 78, 748 (1950) - Published 15 June, 1950

Evaporation of Zinc and Zinc Oxide under Electron Bombardment

Francis E. Dart

Phys. Rev. 78, 761 (1950) - Published 15 June, 1950

Stars and Heavy Primaries Recorded during a V-2 Rocket Flight

Herman Yagoda, Hervasio G. De Carvalho, and Nathan Kaplan

Phys. Rev. 78, 765 (1950) - Published 15 June, 1950

The Phenomenological Theory of Liquid Helium II

Sadao Nakajima, Kazuhisa Tomita, and Tunemaru Usui

Phys. Rev. 78, 768 (1950) - Published 15 June, 1950

A Theory of Secondary Electron Emission from Metals

E. M. Baroody

Phys. Rev. 78, 780 (1950) - Published 15 June, 1950

Measurement of the Proton Moment in Absolute Units

H. A. Thomas, R. L. Driscoll, and J. A. Hipple

Phys. Rev. 78, 787 (1950) - Published 15 June, 1950

Magnetic Field Penetration in Superconducting Lead

M. C. Steele

Phys. Rev. 78, 791 (1950) - Published 15 June, 1950

Field and Charge Measurements in Quantum Electrodynamics

N. Bohr and L. Rosenfeld

Phys. Rev. 78, 794 (1950) - Published 15 June, 1950

The Energy Spectrum of Neutrons from a Po—Be Source

B. G. Whitmore and W. B. Baker

Phys. Rev. 78, 799 (1950) - Published 15 June, 1950

Evidence for the Production of Neutral Mesons by Photons

J. Steinberger, W. K. H. Panofsky, and J. Steller

Phys. Rev. 78, 802 (1950) - Published 15 June, 1950

Letters to the Editor

Nuclear Magnetic Moment of ${Sc}^{45}$

D. M. Hunten

Phys. Rev. 78, 806 (1950) - Published 15 June, 1950

Search for Nuclear Energy Levels in $C^{13}$

D. W. Miller

Phys. Rev. 78, 806 (1950) - Published 15 June, 1950

Detection of Magnetic Resonance by Ion Resonance Absorption

H. Sommer and H. A. Thomas

Phys. Rev. 78, 806 (1950) - Published 15 June, 1950

On the Possibility of Electric Dipole Moments for Elementary Particles and Nuclei

E. M. Purcell and N. F. Ramsey

Phys. Rev. 78, 807 (1950) - Published 15 June, 1950

Supernovae

L. B. Borst

Phys. Rev. 78, 807 (1950) - Published 15 June, 1950

The Chromium Isotope of Mass 55

Daniel R. Miller

Phys. Rev. 78, 808 (1950) - Published 15 June, 1950

Temperature Dependence of the Energy Gap in Monatomic Semiconductors

H. Y. Fan

Phys. Rev. 78, 808 (1950) - Published 15 June, 1950

On the Origin of the Cosmic Radiation from the Sun

K. O. Kiepenheuer

Phys. Rev. 78, 809 (1950) - Published 15 June, 1950

Hyperfine Structure of $4 {}^{1, 3}F - nG$ of the Spectrum of Al II

S. Suwa

Phys. Rev. 78, 810 (1950) - Published 15 June, 1950

Electrets

W. F. G. Swann

Phys. Rev. 78, 811 (1950) - Published 15 June, 1950

Beta-Spectrum of ${Ne}^{23}$

H. Brown and V. Perez-Mendez

Phys. Rev. 78, 812 (1950) - Published 15 June, 1950

Gamma-Radiation from ${Ne}^{23}$

V. Perez-Mendez and H. Brown

Phys. Rev. 78, 812 (1950) - Published 15 June, 1950

Superconductivity of Isotopes of Mercury

B. Serin, C. A. Reynolds, and L. B. Nesbitt

Phys. Rev. 78, 813 (1950) - Published 15 June, 1950

Transmutation-Produced Germanium Semiconductors

J. W. Cleland, K. Lark-Horovitz, and J. C. Pigg

Phys. Rev. 78, 814 (1950) - Published 15 June, 1950

Fast Neutron Bombardment Effects in Germanium

J. H. Crawford, Jr. and K. Lark-Horovitz

Phys. Rev. 78, 815 (1950) - Published 15 June, 1950

The Photon Yield of Electron-Hole Pairs in Germanium

F. S. Goucher

Phys. Rev. 78, 816 (1950) - Published 15 June, 1950

An Experimental Investigation of the Nuclear Magnetic Moments of $D^{2}$ and $H^{1}$

Gunnar Lindström

Phys. Rev. 78, 817 (1950) - Published 15 June, 1950

Observation of Second Sound Radiation Pressure by the Thermal Pitot Tube

John R. Pellam

Phys. Rev. 78, 818 (1950) - Published 15 June, 1950

On the Primary Cosmic-Ray Spectrum

J. A. Van Allen and S. F. Singer

Phys. Rev. 78, 819 (1950) - Published 15 June, 1950

Magnetic Susceptibility of $α {Fe}_{2} O_{3}$ and $α {Fe}_{2} O_{3}$ with Added Titanium

F. J. Morin

Phys. Rev. 78, 819 (1950) - Published 15 June, 1950

Superconductivity of Columbium

D. B. Cook, M. W. Zemansky, and H. A. Boorse

Phys. Rev. 78, 820 (1950) - Published 15 June, 1950

Beta-Gamma-Angular Correlation

Stuart L. Ridgway

Phys. Rev. 78, 821 (1950) - Published 15 June, 1950

Correlation in the Direction and Polarization of Two Successive Quanta for ${Rh}^{106}$ , ${Co}^{60}$ , and ${Cs}^{134}$

A. H. Williams and M. L. Wiedenbeck

Phys. Rev. 78, 822 (1950) - Published 15 June, 1950

Double Beta-Decay of ${Te}^{130}$

Mark G. Inghram and John H. Reynolds

Phys. Rev. 78, 822 (1950) - Published 15 June, 1950

The Effect of the Compressibility of the Earth on Its Magnetic Field

C. Truesdell

Phys. Rev. 78, 823 (1950) - Published 15 June, 1950

The Production of $π^{+}$ -Mesons by Protons on Protons in the Direction of the Beam

W. F. Cartwright, C. Richman, M. N. Whitehead, and H. A. Wilcox

Phys. Rev. 78, 823 (1950) - Published 15 June, 1950

On the Positive and Negative Excess of the Penetrating Component of Cosmic Radiation at 3500 m above Sea Level

I. F. Quercia, B. Rispoli, and S. Sciuti

Phys. Rev. 78, 824 (1950) - Published 15 June, 1950

The Gamma-Ray Spectrum from the Absorption of $π^{-}$ - Mesons in Hydrogen

Wolfgang K. H. Panofsky, Lee Aamodt, and Herbert F. York

Phys. Rev. 78, 825 (1950) - Published 15 June, 1950

An Oscillographic Method for Observing Magnetic Resonance Spectra

R. Malvano and M. Panetti

Phys. Rev. 78, 826 (1950) - Published 15 June, 1950

ERRATA

Erratum: On the Role of the Subsidiary Condition in Quantum Electrodynamics

F. Coester and J. M. Jauch

Phys. Rev. 78, 827 (1950) - Published 15 June, 1950