Volume 79, Issue 5

September 1950

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ARTICLES

Neutron Cross Sections at 120 and 345 Ev

C. T. Hibdon

Phys. Rev. 79, 747 (1950) - Published 1 September, 1950

Experiments on Cosmic-Ray Mesons and Protons at Several Altitudes and Latitudes

Marcello Conversi

Phys. Rev. 79, 749 (1950) - Published 1 September, 1950

Cascades of Nuclear Disintegrations Induced by the Cosmic Radiation

G. Cocconi, V. Cocconi Tongiorgi, and M. Widgoff

Phys. Rev. 79, 768 (1950) - Published 1 September, 1950

Radioactive Isomers of ${Sn}^{117}$ and ${Sn}^{119}$

J. W. Mihelich and R. D. Hill

Phys. Rev. 79, 781 (1950) - Published 1 September, 1950

Radioactive Isotopes of Gadolinium

R. E. Hein and A. F. Voigt

Phys. Rev. 79, 783 (1950) - Published 1 September, 1950

The Neutrons from the Disintegration of $C^{13}$ by Deuterons

C. E. Mandeville and C. P. Swann

Phys. Rev. 79, 787 (1950) - Published 1 September, 1950

A Mass Spectrometric Investigation of Branching in ${Cu}^{64}$ , ${Br}^{80}$ , ${Br}^{82}$ and $I^{128}$

John H. Reynolds

Phys. Rev. 79, 789 (1950) - Published 1 September, 1950

The Phenomenological Theory of Exchange Currents in Nuclei

R. K. Osborn and L. L. Foldy

Phys. Rev. 79, 795 (1950) - Published 1 September, 1950

Diffusion in the Ionosphere

M. H. Johnson and E. O. Hulburt

Phys. Rev. 79, 802 (1950) - Published 1 September, 1950

Further Investigation of the Radioactivity of ${Sb}^{124}$

L. M. Langer, R. D. Moffat, and H. C. Price, Jr.

Phys. Rev. 79, 808 (1950) - Published 1 September, 1950

Relation between $π$ - and $μ$ -Meson Production Spectra in the Atmosphere

Giulio Ascoli

Phys. Rev. 79, 812 (1950) - Published 1 September, 1950

Radioactive Isotopes of the Rare Earths. III. Terbium and Holmium Isotopes

Geoffrey Wilkinson and Harry G. Hicks

Phys. Rev. 79, 815 (1950) - Published 1 September, 1950

The Radiofrequency Spectrum of $K^{39}$ F by the Electric Resonance Method

Ludwig Grabner and Vernon Hughes

Phys. Rev. 79, 819 (1950) - Published 1 September, 1950

Energy Levels, Selection Rules, and Line Intensities for Molecular Beam Electric Resonance Experiments with Diatomic Molecules

Vernon Hughes and Ludwig Grabner

Phys. Rev. 79, 829 (1950) - Published 1 September, 1950

Hyperfine Structure and Isotope Shift in Barium

O. H. Arroe

Phys. Rev. 79, 836 (1950) - Published 1 September, 1950

${Li}^{8}$ Splinters from Nuclear Bombardments

S. Courtenay Wright

Phys. Rev. 79, 838 (1950) - Published 1 September, 1950

Theory of the Superconducting State. I. The Ground State at the Absolute Zero of Temperature

H. Fröhlich

Phys. Rev. 79, 845 (1950) - Published 1 September, 1950

Fluorescence of Solutions Bombarded with High Energy Radiation (Energy Transport in Liquids)

Hartmut Kallmann and Milton Furst

Phys. Rev. 79, 857 (1950) - Published 1 September, 1950

Condensation Phenomena in a Clustering Bose-Einstein Gas

William Band

Phys. Rev. 79, 871 (1950) - Published 1 September, 1950

Crystal Statistics of a Two-Dimensional Triangular Ising Lattice

G. F. Newell

Phys. Rev. 79, 876 (1950) - Published 1 September, 1950

Letters to the Editor

Superconductivity in Tin-Germanium "Alloys"

Ralph P. Hudson

Phys. Rev. 79, 883 (1950) - Published 1 September, 1950

Radiofrequency Spectrum of $H_{2}$ in a Magnetic Field

H. G. Kolsky, T. E. Phipps, Jr., N. F. Ramsey, and H. B. Silsbee

Phys. Rev. 79, 883 (1950) - Published 1 September, 1950

The Zero-Point Energy of Helium

C. L. Pekeris

Phys. Rev. 79, 884 (1950) - Published 1 September, 1950

A Ferromagnetic Curie Point in KTa $O_{3}$ at Very Low Temperatures

J. K. Hulm, B. T. Matthias, and E. A. Long

Phys. Rev. 79, 885 (1950) - Published 1 September, 1950

A New Long-Lived Krypton Activity

John H. Reynolds

Phys. Rev. 79, 886 (1950) - Published 1 September, 1950

Atomic Moments of Ferromagnetic Alloys

R. M. Bozorth

Phys. Rev. 79, 887 (1950) - Published 1 September, 1950

A New Determination of $\frac{h}{e}$

C. L. Hemenway and F. G. Dunnington

Phys. Rev. 79, 887 (1950) - Published 1 September, 1950

Domain Structure of a Cobalt-Nickel Crystal

R. M. Bozorth and J. G. Walker

Phys. Rev. 79, 888 (1950) - Published 1 September, 1950

The Spin of the Neutron

M. Hamermesh and E. Eisner

Phys. Rev. 79, 888 (1950) - Published 1 September, 1950

Energy Levels Associated with ${Se}^{75}$

J. M. Cork, W. C. Rutledge, C. E. Branyan, A. E. Stoddard, and J. M. Le Blanc

Phys. Rev. 79, 889 (1950) - Published 1 September, 1950

Thermal Equilibrium in Neutron-Irradiated Semiconductors

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

Phys. Rev. 79, 889 (1950) - Published 1 September, 1950

On the Formation of Dislocations from Vacancies

Frederick Seitz

Phys. Rev. 79, 890 (1950) - Published 1 September, 1950

The Fierz and Kopfermann-Brix Explanation of the Spectroscopic Odd-Even Isotope Shift Staggering

G. Breit

Phys. Rev. 79, 891 (1950) - Published 1 September, 1950

Disintegration of ${Ru}^{103}$

Evani Kondaiah

Phys. Rev. 79, 891 (1950) - Published 1 September, 1950

Temperature Variation of the Compressibility of Molten Sodium

T. E. Pochapsky and S. L. Quimby

Phys. Rev. 79, 892 (1950) - Published 1 September, 1950

Scattering of Positrons and Electrons by Nuclei

H. J. Lipkin and M. G. White

Phys. Rev. 79, 892 (1950) - Published 1 September, 1950

The Reaction $C^{14} (n, γ) C^{15}$

L. Yaffe and W. H. Stevens

Phys. Rev. 79, 893 (1950) - Published 1 September, 1950

Low Energy Electrons at the End of $μ$ -Meson Tracks

William F. Fry

Phys. Rev. 79, 893 (1950) - Published 1 September, 1950

Restriction of Prismatic Punching to a Limited Class of Crystals

F. R. N. Nabarro

Phys. Rev. 79, 894 (1950) - Published 1 September, 1950

Luminescence of Color Centers in Alkali Halides

Clifford C. Klick

Phys. Rev. 79, 894 (1950) - Published 1 September, 1950

Beta-Decay of ${Ag}^{111}$ and Spin-Orbit Coupling in ${Cd}^{111}$

Stig Johansson

Phys. Rev. 79, 896 (1950) - Published 1 September, 1950

The Radiations of ${Ce}^{141}$ and ${Pa}^{233}$

M. S. Freedman and D. W. Engelkemeir

Phys. Rev. 79, 897 (1950) - Published 1 September, 1950

Temperature Dependence of the Energy Gap in Germanium from Conductivity and Hall Data

V. A. Johnson and H. Y. Fan

Phys. Rev. 79, 899 (1950) - Published 1 September, 1950

Emission of Neutral Radiation in Cosmic-Ray Stars

E. Pickup and L. Voyvodic

Phys. Rev. 79, 899 (1950) - Published 1 September, 1950

Magnetic Analysis of the $B^{10} (p, α) {Be}^{7}$ Reaction

D. M. Van Patter, A. Sperduto, E. N. Strait, and W. W. Buechner

Phys. Rev. 79, 900 (1950) - Published 1 September, 1950

Radiations of ${Krypton}^{85}$

H. Zeldes, B. H. Ketelle, and A. R. Brosi

Phys. Rev. 79, 901 (1950) - Published 1 September, 1950

${Argon}^{39}$ Beta-Spectrum

A. R. Brosi, H. Zeldes, and B. H. Ketelle

Phys. Rev. 79, 902 (1950) - Published 1 September, 1950

The Nature of Trapped Hole Color Centers in the Alkali Halides

E. Burstein and J. J. Oberly

Phys. Rev. 79, 903 (1950) - Published 1 September, 1950

Multiple Scattering of the Particles Producing the "Positive Tracks" Appearing near Beta-Ray Emitters

Gerhart Groetzinger and Fred L. Ribe

Phys. Rev. 79, 904 (1950) - Published 1 September, 1950

The Absorption of Penetrating Cosmic Rays Underground

C. A. Randall, N. Sherman, and W. E. Hazen

Phys. Rev. 79, 905 (1950) - Published 1 September, 1950

Internal Conversion Coefficients of ${Sc}^{46}$

M. L. Moon, M. A. Waggoner, and A. Roberts

Phys. Rev. 79, 905 (1950) - Published 1 September, 1950

On the Theory of Supersonic Absorption

A. Gierer and K. Wirtz

Phys. Rev. 79, 906 (1950) - Published 1 September, 1950

Mobility of Electrons and Holes in Diamond

E. A. Pearlstein and R. B. Sutton

Phys. Rev. 79, 907 (1950) - Published 1 September, 1950

Upper Limit on the Cross Section for the Scattering of Neutrinos

J. H. Barrett

Phys. Rev. 79, 907 (1950) - Published 1 September, 1950

Neutron Binding Energies

J. R. Huizenga, L. B. Magnusson, O. C. Simpson, and G. H. Winslow

Phys. Rev. 79, 908 (1950) - Published 1 September, 1950

The Solar Flare of November 19, 1949 and Cosmic Rays

J. Clay and H. F. Jongen

Phys. Rev. 79, 908 (1950) - Published 1 September, 1950

The Photo-Disintegration of the Deuteron

Ingvar F. E. Hansson

Phys. Rev. 79, 909 (1950) - Published 1 September, 1950

An Anomalous Effect Observed in Self-Quenching Counters Containing Neon

A. D. Krumbein

Phys. Rev. 79, 910 (1950) - Published 1 September, 1950

Differential Identities in Three-Field Renormalization Problem

Abdus Salam

Phys. Rev. 79, 910 (1950) - Published 1 September, 1950

Isotope Effect and Lattice Properties in Superconductivity

Karl F. Herzfeld, Emanuel Maxwell, and Russell B. Scott

Phys. Rev. 79, 911 (1950) - Published 1 September, 1950

Ionization Chamber Bursts at Very High Altitudes

G. W. McClure and M. A. Pomerantz

Phys. Rev. 79, 911 (1950) - Published 1 September, 1950

On the Origin of the Cosmic Radiation

C. Y. Fan

Phys. Rev. 79, 912 (1950) - Published 1 September, 1950