Volume 77, Issue 5

March 1950

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ARTICLES

A New Method for Determining the Relative Phase with Which Slow Neutrons Are Scattered by Nuclei

P. J. Bendt and I. W. Ruderman

Phys. Rev. 77, 575 (1950) - Published 1 March, 1950

Excited States of ${Be}^{7}$

J. C. Grosskreutz and K. B. Mather

Phys. Rev. 77, 580 (1950) - Published 1 March, 1950

Study of the Multiple Scattering of Fast Charged Particles in a Gas and Its Role in the Interpretation of Cloud-Chamber Tracks

Gerhart Groetzinger, Martin J. Berger, and Fred L. Ribe

Phys. Rev. 77, 584 (1950) - Published 1 March, 1950

Star Fragments in Oxygen and Helium under Bombardment by 90-Mev Neutrons

James Tracy and Wilson M. Powell

Phys. Rev. 77, 594 (1950) - Published 1 March, 1950

Elastic Scattering of 84-Mev Neutrons

A. Bratenahl, S. Fernbach, R. H. Hildebrand, C. E. Leith, and B. J. Moyer

Phys. Rev. 77, 597 (1950) - Published 1 March, 1950

Nuclear Cross Sections for 95-Mev Neutrons

James DeJuren and Norman Knable

Phys. Rev. 77, 606 (1950) - Published 1 March, 1950

Neutron-Deficient Cesium Isotopes

Richard W. Fink, Frederick L. Reynolds, and D. H. Templeton

Phys. Rev. 77, 614 (1950) - Published 1 March, 1950

Nuclear Pairs and Gamma-Radiation from Excited States of $O^{16}$

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

Phys. Rev. 77, 617 (1950) - Published 1 March, 1950

Theory of the D + D Reactions Part I. Analysis of the Energy Dependence

F. M. Beiduk, J. R. Pruett, and E. J. Konopinski

Phys. Rev. 77, 622 (1950) - Published 1 March, 1950

Theory of the D+D Reactions Part II. Relation to the Internucleonic Forces

J. R. Pruett, F. M. Beiduk, and E. J. Konopinski

Phys. Rev. 77, 628 (1950) - Published 1 March, 1950

The Isotopic Constitution of Scandium, Gadolinium, Dysprosium, Holmium, Erbium, and Ytterbium

Wallace T. Leland

Phys. Rev. 77, 634 (1950) - Published 1 March, 1950

Ionization Chamber Study of the Disintegration of ${He}^{3}$ and $N^{14}$ by Thermal Neutrons

W. Franzen, J. Halpern, and W. E. Stephens

Phys. Rev. 77, 641 (1950) - Published 1 March, 1950

The Effective Range of Nuclear Forces II. Photo-Disintegration of the Deuteron

H. A. Bethe and Conrad Longmire

Phys. Rev. 77, 647 (1950) - Published 1 March, 1950

The Beta-Spectra of ${Cs}^{137}$ , $Y^{91}$ , ${Pm}^{147}$ , ${Ru}^{106}$ , ${Sm}^{151}$ , $P^{32}$ , and ${Tm}^{170}$

Harold M. Agnew

Phys. Rev. 77, 655 (1950) - Published 1 March, 1950

Drift Velocities of Electrons in Argon, Nitrogen, and Argon-Nitrogen Mixtures

E. D. Klema and J. S. Allen

Phys. Rev. 77, 661 (1950) - Published 1 March, 1950

On a New Theory of Nuclear Forces

H. J. Bhabha

Phys. Rev. 77, 665 (1950) - Published 1 March, 1950

An Approximate Theory of Order in Alloys

J. M. Cowley

Phys. Rev. 77, 669 (1950) - Published 1 March, 1950

On the Emission Bands of C $F_{2}$

Putcha Venkateswarlu

Phys. Rev. 77, 676 (1950) - Published 1 March, 1950

Internal Conversion in ${Ni}^{60}$

Martin Deutsch and Kai Siegbahn

Phys. Rev. 77, 680 (1950) - Published 1 March, 1950

Reactions Leading to ${Fe}^{53}$ , ${Mn}^{57}$ , and ${Cr}^{55}$

M. E. Nelson and M. L. Pool

Phys. Rev. 77, 682 (1950) - Published 1 March, 1950

On Wave Equation Vector-Matrices and Their Spurs

R. J. Duffin

Phys. Rev. 77, 683 (1950) - Published 1 March, 1950

A Study of Penetrating Showers at 3260 Meters

William D. Walker

Phys. Rev. 77, 686 (1950) - Published 1 March, 1950

A Remark on the Coupling of Gravitation and Electron

Hermann Weyl

Phys. Rev. 77, 699 (1950) - Published 1 March, 1950

Relativistic Motion in a Magnetic Field

M. H. Johnson and B. A. Lippmann

Phys. Rev. 77, 702 (1950) - Published 1 March, 1950

Conductivity Pulses Induced in Insulating Liquids by Ionizing Radiations

Norman Davidson and A. E. Larsh, Jr.

Phys. Rev. 77, 706 (1950) - Published 1 March, 1950

Do the Equations of Motion Determine the Quantum Mechanical Commutation Relations?

Eugene P. Wigner

Phys. Rev. 77, 711 (1950) - Published 1 March, 1950

Letters to the Editor

Nuclear Cross Sections of High Energy Pi-Mesons

Kenneth Greisen

Phys. Rev. 77, 713 (1950) - Published 1 March, 1950

Cross Sections for the Photo-Disintegration of Nitrogen and Oxygen Nuclei by 100-Mev Betatron X-Rays

E. R. Gaerttner and M. L. Yeater

Phys. Rev. 77, 714 (1950) - Published 1 March, 1950

The Half-Life of Carbon Fourteen and a Comparison of Gas Phase Counter Methods

Warren W. Miller, Robert Ballentine, William Bernstein, Lewis Friedman, A. O. Nier, and R. D. Evans

Phys. Rev. 77, 714 (1950) - Published 1 March, 1950

The Lateral Distribution of Photons in Extensive Air Showers

G. Molière

Phys. Rev. 77, 715 (1950) - Published 1 March, 1950

On the Magnetic Moments of ${Mn}^{55}$ , ${Co}^{59}$ , ${Cl}^{37}$ , $N^{15}$ , and $N^{14}$

W. G. Proctor and F. C. Yu

Phys. Rev. 77, 716 (1950) - Published 1 March, 1950

The Dependence of a Nuclear Magnetic Resonance Frequency upon Chemical Compound

W. G. Proctor and F. C. Yu

Phys. Rev. 77, 717 (1950) - Published 1 March, 1950

Spallation Products of Arsenic with 190-Mev Deuterons

H. H. Hopkins, Jr.

Phys. Rev. 77, 717 (1950) - Published 1 March, 1950

Electron Recombination in Helium

D. R. Bates

Phys. Rev. 77, 718 (1950) - Published 1 March, 1950

Microwave Spectra and Molecular Constants of Trifluorosilane Derivatives. Si $F_{3}$ H, Si $F_{3}$ C $H_{3}$ , Si $F_{3}$ Cl, and Si $F_{3}$ Br

John Sheridan and Walter Gordy

Phys. Rev. 77, 719 (1950) - Published 1 March, 1950

Multiple Meson Processes and Nucleon Recoil

Alex E. S. Green

Phys. Rev. 77, 719 (1950) - Published 1 March, 1950

Letter to the Editor

The Near Infra-Red Spectrum of the Polar Aurora

W. Petrie

Phys. Rev. 77, 720 (1950) - Published 1 March, 1950

Letters to the Editor

A Possible Isomeric State of RaE

H. M. Neumann, J. J. Howland, Jr., and I. Perlman

Phys. Rev. 77, 720 (1950) - Published 1 March, 1950

A Confirmation of the Workman-Reynolds Effect

Vincent J. Schaefer

Phys. Rev. 77, 721 (1950) - Published 1 March, 1950

Statistics of the Three-Dimensional Ferromagnet

D. Ter Haar and B. Martin

Phys. Rev. 77, 721 (1950) - Published 1 March, 1950

Nuclear Spin and Isotope Shift of Xenon Investigated with Separated Isotopes

Jørgen Koch and Ebbe Rasmussen

Phys. Rev. 77, 722 (1950) - Published 1 March, 1950

Possible Experimental Determination of Whether the Neutral Meson is Scalar or Pseudoscalar

C. N. Yang

Phys. Rev. 77, 722 (1950) - Published 1 March, 1950

Neutron Capture Gamma-Rays from ${Be}^{9}$ , $C^{12}$ , and $N^{14}$

B. B. Kinsey, G. A. Bartholomew, and W. H. Walker

Phys. Rev. 77, 723 (1950) - Published 1 March, 1950

Letter to the Editor

On the Low States of ${Li}^{7}$ and ${Be}^{7}$

D. R. Inglis

Phys. Rev. 77, 724 (1950) - Published 1 March, 1950

Letters to the Editor

Crucial Experiment Demonstrating Single Domain Property of Fine Ferromagnetic Powders

C. Kittel, J. K. Galt, and W. E. Campbell

Phys. Rev. 77, 725 (1950) - Published 1 March, 1950

Effect of Exchange Interaction on Ferromagnetic Microwave Resonance Absorption

C. Kittel and Conyers Herring

Phys. Rev. 77, 725 (1950) - Published 1 March, 1950

The $β$ -Spectrum of ${Be}^{10}$

D. J. Hughes, C. Eggler, and D. E. Alburger

Phys. Rev. 77, 726 (1950) - Published 1 March, 1950

Infra-Red Absorption in Silicon

H. B. Briggs

Phys. Rev. 77, 727 (1950) - Published 1 March, 1950

The Neutron Density in the Free Atmosphere up to 100,000 Feet

Luke C. L. Yuan

Phys. Rev. 77, 728 (1950) - Published 1 March, 1950

The Zenith Angle Dependence of the Cosmic Radiation above the Atmosphere at $λ = 41$ °N

S. F. Singer

Phys. Rev. 77, 729 (1950) - Published 1 March, 1950

On the Nature of the Cosmic Radiation near the Pfotzer Maximum at $λ = 41$ °N

S. F. Singer

Phys. Rev. 77, 730 (1950) - Published 1 March, 1950

Letter to the Editor

Resonance Neutron Scattering in ${Na}^{23}$ at 3000 Ev

C. T. Hibdon, C. O. Muehlhause, W. Selove, and W. Woolf

Phys. Rev. 77, 730 (1950) - Published 1 March, 1950

Letters to the Editor

Showers of Minimum Ionizing Particles from Cosmic-Ray Induced Nuclear Disintegrations in Nuclear Emulsions

B. T. Feld, I. L. Lebow, and L. S. Osborne

Phys. Rev. 77, 731 (1950) - Published 1 March, 1950

The Neutrons from the Disintegration of Beryllium by Deuterons

W. D. Whitehead and C. E. Mandeville

Phys. Rev. 77, 732 (1950) - Published 1 March, 1950

Evidence for a Charged Heavy Meson

H. H. Forster

Phys. Rev. 77, 733 (1950) - Published 1 March, 1950

Thermoelectric Power and Mobility of Carriers in Selenium

Herbert W. Henkels

Phys. Rev. 77, 734 (1950) - Published 1 March, 1950

Production of $C^{15}$

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

Phys. Rev. 77, 736 (1950) - Published 1 March, 1950

Dependence of the $F^{19}$ Nuclear Resonance Position on Chemical Compound

W. C. Dickinson

Phys. Rev. 77, 736 (1950) - Published 1 March, 1950

Proceedings of the American Physical Society

Minutes of the Meeting at Chicago, November 25 and 26, 1949

Phys. Rev. 77, 737 (1950) - Published 1 March, 1950