Volume 80, Issue 4

November 1950

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ARTICLES

Neutron Deficient Radioactive Isotopes of Tantalum and Wolfram

Geoffrey Wilkinson

Phys. Rev. 80, 495 (1950) - Published 15 November, 1950

Resonance Capture of Neutrons by Uranium

Herbert L. Anderson

Phys. Rev. 80, 499 (1950) - Published 15 November, 1950

Small Angle Scattering of Thermal Neutrons

H. H. A. Krueger, D. Meneghetti, G. R. Ringo, and L. Winsberg

Phys. Rev. 80, 507 (1950) - Published 15 November, 1950

Pressure Broadening of the Ammonia Inversion Line by Foreign Gases: Quadrupole-Induced Dipole Interactions

P. W. Anderson

Phys. Rev. 80, 511 (1950) - Published 15 November, 1950

On the Interactions of Birkhoff's Gravitational Field with the Electromagnetic and Pair Fields

Marcos Moshinsky

Phys. Rev. 80, 514 (1950) - Published 15 November, 1950

Three New Delayed Alpha-Emitters of Low Mass

Luis W. Alvarez

Phys. Rev. 80, 519 (1950) - Published 15 November, 1950

Proton-Neutron Reactions and Thresholds

H. T. Richards, R. V. Smith, and C. P. Browne

Phys. Rev. 80, 524 (1950) - Published 15 November, 1950

The Disintegration of Boron by Slow Neutrons

G. C. Hanna

Phys. Rev. 80, 530 (1950) - Published 15 November, 1950

$N$ -Component in Extensive Air Showers

K. Greisen, W. D. Walker, and S. P. Walker

Phys. Rev. 80, 535 (1950) - Published 15 November, 1950

Mean Free Path of Penetrating Shower Producers

W. D. Walker, S. P. Walker, and K. Greisen

Phys. Rev. 80, 546 (1950) - Published 15 November, 1950

Hyperfine Structure of Zeeman Levels in Nitric Oxide

Allan F. Henry

Phys. Rev. 80, 549 (1950) - Published 15 November, 1950

Methods of Calculation of Radial Wave Functions and New Tables of Coulomb Functions

I. Bloch, M. H. Hull, A. A. Broyles, Jr., W. G. Bouricius, B. E. Freeman, and G. Breit

Phys. Rev. 80, 553 (1950) - Published 15 November, 1950

Asymptotic Expansion of the Irregular Coulomb Function

G. Breit and M. H. Hull, Jr.

Phys. Rev. 80, 561 (1950) - Published 15 November, 1950

Hartree Computation of the Internal Diamagnetic Field for Atoms

W. C. Dickinson

Phys. Rev. 80, 563 (1950) - Published 15 November, 1950

Wave Functions for Superconducting Electrons

John Bardeen

Phys. Rev. 80, 567 (1950) - Published 15 November, 1950

Angular Distribution of the ${Al}^{27} (d, α) {Mg}^{25}$ Reaction and Energy Levels in ${Mg}^{25}$

A. D. Schelberg, M. B. Sampson, and R. G. Cochran

Phys. Rev. 80, 574 (1950) - Published 15 November, 1950

Spin Echoes

E. L. Hahn

Phys. Rev. 80, 580 (1950) - Published 15 November, 1950

Protons from the Deuteron Bombardment of Enriched Silicon and Related Atomic Masses

H. T. Motz and R. F. Humphreys

Phys. Rev. 80, 595 (1950) - Published 15 November, 1950

Angular Yield of Both Proton Groups from ${Li}^{6} (d, p) {Li}^{7}$

R. W. Krone, S. S. Hanna, and D. R. Inglis

Phys. Rev. 80, 603 (1950) - Published 15 November, 1950

Evidence from Nuclear Masses on Proposed Closed Shells at 20 Nucleons

W. Low and C. H. Townes

Phys. Rev. 80, 608 (1950) - Published 15 November, 1950

On a Difference Equation Method in Cosmic-Ray Shower Theory

W. T. Scott

Phys. Rev. 80, 611 (1950) - Published 15 November, 1950

The Differential Range Spectrum of Cosmic-Ray Mesons

Lawrence Germain

Phys. Rev. 80, 616 (1950) - Published 15 November, 1950

Latitude and Altitude Dependence of the Local Hard Showers of Cosmic Rays

T. G. Walsh and O. Piccioni

Phys. Rev. 80, 619 (1950) - Published 15 November, 1950

Momentum Distribution of Charged Cosmic-Ray Particles at Sea Level

Donald A. Glaser, Bernard Hamermesh, and George Safonov

Phys. Rev. 80, 625 (1950) - Published 15 November, 1950

Measurement of Gamma-Ray Energies with Single Crystals of NaI(T1)

R. Hofstadter and J. A. Mcintyre

Phys. Rev. 80, 631 (1950) - Published 15 November, 1950

Photo-Disintegration Cross Sections of Deuterium and Beryllium for the Gamma-Rays of Sodium 24 and Gallium 72

Arthur H. Snell, E. C. Barker, and R. L. Sternberg

Phys. Rev. 80, 637 (1950) - Published 15 November, 1950

Deuteron Bombardment of $C^{14}$

Emmett L. Hudspeth, Charles P. Swann, and N. P. Heydenburg

Phys. Rev. 80, 643 (1950) - Published 15 November, 1950

Radioactive Isotopes of Rubidium

D. G. Karraker and D. H. Templeton

Phys. Rev. 80, 646 (1950) - Published 15 November, 1950

The Radioactivity of ${Ga}^{66}$

Lawrence M. Langer and R. Douglas Moffat

Phys. Rev. 80, 651 (1950) - Published 15 November, 1950

Luminescence and Trapping in Zinc Sulfide Phosphors with and without Copper Activator

Richard H. Bube

Phys. Rev. 80, 655 (1950) - Published 15 November, 1950

Quantum Electrodynamics of Charged Particles without Spin

F. Rohrlich

Phys. Rev. 80, 666 (1950) - Published 15 November, 1950

On the Hall Effect in Ferromagnetics

Emerson M. Pugh, N. Rostoker, and A. Schindler

Phys. Rev. 80, 688 (1950) - Published 15 November, 1950

Magneto-Hydrodynamic Shocks

F. De Hoffmann and E. Teller

Phys. Rev. 80, 692 (1950) - Published 15 November, 1950

The Surface Photoelectric Effect

M. J. Buckingham

Phys. Rev. 80, 704 (1950) - Published 15 November, 1950

The Mechanism of Self-Diffusion in Alkali Metals

Heinz R. Paneth

Phys. Rev. 80, 708 (1950) - Published 15 November, 1950

Piezoelectric Constants of Alpha- and Beta-Quartz at Various Temperatures

Richard K. Cook and Pearl G. Weissler

Phys. Rev. 80, 712 (1950) - Published 15 November, 1950

Theory of Superconductivity

L. Tisza

Phys. Rev. 80, 717 (1950) - Published 15 November, 1950

A Note on Tisza's Theory of Superconductivity

J. M. Luttinger

Phys. Rev. 80, 727 (1950) - Published 15 November, 1950

Quantum Theory of the Longitudinal Electromagnetic Field

S. T. Ma

Phys. Rev. 80, 729 (1950) - Published 15 November, 1950

Hall Coefficient and Resistivity of Thin Films of Antimony Prepared by Distillation

W. F. Leverton and A. J. Dekker

Phys. Rev. 80, 732 (1950) - Published 15 November, 1950

The Superconductivity of Columbium

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

Phys. Rev. 80, 737 (1950) - Published 15 November, 1950

Ferromagnetic Resonance in Nickel Ferrite

W. A. Yager, J. K. Galt, F. R. Merritt, and E. A. Wood

Phys. Rev. 80, 744 (1950) - Published 15 November, 1950

Letters to the Editor

Nuclear Disintegrations at 29,000 Meters above Sea Level

M. M. Addario and S. Tamburino

Phys. Rev. 80, 749 (1950) - Published 15 November, 1950

On the Forward Scattering of 3.1-Mev Neutrons by the Deuteron

Jumpei Sanada and Shotaro Yamabe

Phys. Rev. 80, 750 (1950) - Published 15 November, 1950

The Shape of the Low Energy Beta-Spectrum of ${Rb}^{86}$

Herbert R. Muether and Stuart L. Ridgway

Phys. Rev. 80, 750 (1950) - Published 15 November, 1950

On the Deviations of Nuclear Magnetic Moments from the Schmidt Limits

L. L. Foldy and F. J. Milford

Phys. Rev. 80, 751 (1950) - Published 15 November, 1950

Cascade Processes Recorded in an Emulsion Chamber Exposed in the Stratosphere

Herman Yagoda

Phys. Rev. 80, 753 (1950) - Published 15 November, 1950

Are Mesons Complex Particles?

M. El Nadi

Phys. Rev. 80, 754 (1950) - Published 15 November, 1950

On the Probability of Asymmetric and Symmetric Fission

T. Yasaki and O. Miyatake

Phys. Rev. 80, 754 (1950) - Published 15 November, 1950

On the General Motion of Matter at the Cosmological Scale

Antonio GiÃO

Phys. Rev. 80, 755 (1950) - Published 15 November, 1950

The Thermal Neutron Diffusion Length of Paraffin

C. W. Tittle

Phys. Rev. 80, 756 (1950) - Published 15 November, 1950

Depression of the Thermal Neutron Density by a Detecting Foil

C. W. Tittle

Phys. Rev. 80, 756 (1950) - Published 15 November, 1950

Scintillations Produced by Cosmic Rays

C. G. Montgomery and D. D. Montgomery

Phys. Rev. 80, 757 (1950) - Published 15 November, 1950

Theory of Magnetic Properties of Anisotropic Permanent Magnet Alloys

K. Hoselitz and M. Mccaig

Phys. Rev. 80, 757 (1950) - Published 15 November, 1950

Susceptibility and Magnetic Anisotropy of Indium Single Crystals

J. Verhaeghe, G. Vandermeerssche, and G. Le Compte

Phys. Rev. 80, 758 (1950) - Published 15 November, 1950

The ${Ca}^{45}$ Beta-Distribution Obtained in a Split Crystal Scintillation Spectrometer

B. H. Ketelle

Phys. Rev. 80, 758 (1950) - Published 15 November, 1950

Decay of $Y^{87}$ and ${Sr}^{87 m}$

L. G. Mann and Peter Axel

Phys. Rev. 80, 759 (1950) - Published 15 November, 1950

Double Development of Nuclear Emulsions

Č. Jech

Phys. Rev. 80, 759 (1950) - Published 15 November, 1950

Internal Conversion Electrons and Other Radiations from ${Cl}^{34}$

Lawrence Ruby and J. Reginald Richardson

Phys. Rev. 80, 760 (1950) - Published 15 November, 1950

Mass Dependence of the Superconducting Transition Temperature of Mercury

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

Phys. Rev. 80, 761 (1950) - Published 15 November, 1950

Temperature Effect in Geiger-Müller Counters

Motoharu Kimura

Phys. Rev. 80, 761 (1950) - Published 15 November, 1950

The Gamma-Rays from Neutron-Activated Gold

R. W. Pringle and S. Standil

Phys. Rev. 80, 762 (1950) - Published 15 November, 1950

The Gamma-Radiation of ${Ba}^{131}$

E. B. Dale, E. D. Richert, T. A. Redfield, and J. D. Kurbatov

Phys. Rev. 80, 763 (1950) - Published 15 November, 1950

A Method for Measuring Paramagnetic Absorption on Small Samples

R. P. Lacroix, Ch. E. Ryter, and C. R. Extermann

Phys. Rev. 80, 763 (1950) - Published 15 November, 1950

Effect of Infra-Red on Emission and Trapping in ZnS: Cu Phosphors

Richard H. Bube

Phys. Rev. 80, 764 (1950) - Published 15 November, 1950

Further Remarks on the Absorption of $π^{-}$ -Mesons in Hydrogen

R. E. Marshak, S. Tamor, and A. S. Wightman

Phys. Rev. 80, 765 (1950) - Published 15 November, 1950

On the Absorption of $π^{-}$ -Mesons in Deuterium

S. Tamor and R. E. Marshak

Phys. Rev. 80, 766 (1950) - Published 15 November, 1950

COMMENTS

Comments on Truesdell's Paper on Bernoulli's Theorem for Viscous Compressible Fluids

Bernard Etkin and Victor G. Szebehely

Phys. Rev. 80, 767 (1950) - Published 15 November, 1950

Letters to the Editor

On Bailey's Theory of Growing Circularly Polarized Waves in a Sunspot

R. Q. Twiss

Phys. Rev. 80, 767 (1950) - Published 15 November, 1950

Search for ${Be}^{7}$ States Using the ${Li}^{6}$ Technique

George R. Keepin, Jr.

Phys. Rev. 80, 768 (1950) - Published 15 November, 1950

On the Magnetic Moments of the Proton and Neutron

Roald K. Wangsness

Phys. Rev. 80, 769 (1950) - Published 15 November, 1950

Excited State of $C^{14}$ from the $C^{13} (d, p) C^{14 *}$ Reaction

A. Sperduto, S. S. Holland, Jr., D. M. Van Patter, and W. W. Buechner

Phys. Rev. 80, 769 (1950) - Published 15 November, 1950

ERRATA

Erratum: Scattering of Positrons and Electrons by Nuclei

H. J. Lipkin and M. G. White

Phys. Rev. 80, 770 (1950) - Published 15 November, 1950