Volume 81, Issue 3

February 1951

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ARTICLES

Nuclear Magnetic Moments and Atomic Hyperfine Structure

Aage Bohr

Phys. Rev. 81, 331 (1951) - Published 1 February, 1951

The Existence of Different Capture Levels in the Formation of Nuclear Isomers by Slow Neutron Irradiation

P. C. Capron and A. J. Verhoeve-Stokkink

Phys. Rev. 81, 336 (1951) - Published 1 February, 1951

An Experiment on the Anomalous Scattering of $μ$ -Mesons by Nucleons

E. Amaldi and G. Fidecaro

Phys. Rev. 81, 339 (1951) - Published 1 February, 1951

Relative Photo-Fission Cross Sections of Several Fissionable Materials

J. McElhinney and W. E. Ogle

Phys. Rev. 81, 342 (1951) - Published 1 February, 1951

The Resonance Photo-Fission Cross Section for $U^{238 *}$

W. E. Ogle and J. McElhinney

Phys. Rev. 81, 344 (1951) - Published 1 February, 1951

Boundary Conditions for the Description of Nuclear Reactions

Marcos Moshinsky

Phys. Rev. 81, 347 (1951) - Published 1 February, 1951

Neutron Binding Energies from ( $d, p$ ) Reactions and Nuclear Shell Structure

J. A. Harvey

Phys. Rev. 81, 353 (1951) - Published 1 February, 1951

Angular Distributions of ( $d, p$ ) Reactions Using 14-Mev Deuterons

H. E. Gove

Phys. Rev. 81, 364 (1951) - Published 1 February, 1951

The Angular Distribution of High Energy Neutrons from Targets Bombarded by 330-Mev Protons

Richard D. Miller, Duane C. Sewell, and Robert W. Wright

Phys. Rev. 81, 374 (1951) - Published 1 February, 1951

Thin Ferromagnetic Films

Martin J. Klein and Robert S. Smith

Phys. Rev. 81, 378 (1951) - Published 1 February, 1951

Nuclear Recoils Resulting from the Decay of ${Be}^{7}$

Philip B. Smith and James S. Allen

Phys. Rev. 81, 381 (1951) - Published 1 February, 1951

A Simplification of the Hartree-Fock Method

J. C. Slater

Phys. Rev. 81, 385 (1951) - Published 1 February, 1951

Characteristics of ${Ni}^{59}$ and ${Ni}^{63}$

A. R. Brosi, C. J. Borkowski, E. E. Conn, and J. C. Griess, Jr.

Phys. Rev. 81, 391 (1951) - Published 1 February, 1951

Diffusion of High Energy Gamma-Rays through Matter. I. Fundamental Equations

L. L. Foldy

Phys. Rev. 81, 395 (1951) - Published 1 February, 1951

Diffusion of High Energy Gamma-Rays through Matter. II. Solution of the Diffusion Equation

L. L. Foldy and R. K. Osborn

Phys. Rev. 81, 400 (1951) - Published 1 February, 1951

Measurements of Gamma-Ray Absorption Coefficients

Charlotte Meaker Davisson and Robley D. Evans

Phys. Rev. 81, 404 (1951) - Published 1 February, 1951

On the Displacement of Corresponding Energy Levels of $C^{13}$ and $N^{13}$

Joachim B. Ehrman

Phys. Rev. 81, 412 (1951) - Published 1 February, 1951

Internal Excitation and Apparent Range of Nuclear Forces in Scattering Experiments

G. Breit and M. C. Yovits

Phys. Rev. 81, 416 (1951) - Published 1 February, 1951

Scattering and Absorption of Scalar and Pseudoscalar Mesons by Nucleons

Murray Peshkin

Phys. Rev. 81, 425 (1951) - Published 1 February, 1951

Transmission of Gamma-Rays through Large Thicknesses of Heavy Materials

Glenn H. Peebles and Milton S. Plesset

Phys. Rev. 81, 430 (1951) - Published 1 February, 1951

Interaction Between the $d$ Shells in the Transition Metals

C. Zener

Phys. Rev. 81, 440 (1951) - Published 1 February, 1951

Pressure Dependence of Second Sound Velocity in Liquid Helium. II

R. D. Maurer and Melvin A. Herlin

Phys. Rev. 81, 444 (1951) - Published 1 February, 1951

A Contribution to the Theory of Bose-Einstein Liquids

C. V. Heer and J. G. Daunt

Phys. Rev. 81, 447 (1951) - Published 1 February, 1951

Letters to the Editor

The $r$ -Unit at 320 and 160 Mev

Edwin M. McMillan, Wade Blocker, and Robert W. Kenney

Phys. Rev. 81, 455 (1951) - Published 1 February, 1951

On the Evaluation of the $S$ -Matrix

F. Coester

Phys. Rev. 81, 455 (1951) - Published 1 February, 1951

Note on the Fluorescence Yield of Argon

D. L. Dexter and W. W. Beeman

Phys. Rev. 81, 456 (1951) - Published 1 February, 1951

ERRATA

Erratum: 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. 81, 456 (1951) - Published 1 February, 1951

Letters to the Editor

The Cross Section Ratio $\frac{σ [B^{10} (n, α) {Li}^{7}]}{σ [B^{10} (n, α) {Li}^{7 *}]}$ as a Function of Energy

H. Bichsel, W. Hälg, P. Huber, and A. Stebler

Phys. Rev. 81, 456 (1951) - Published 1 February, 1951

Rayleigh Afterglow in Hydrogen Discharges

Robert J. Lee and Richard G. Fowler

Phys. Rev. 81, 457 (1951) - Published 1 February, 1951

Angular Distribution of Neutrons from the Bombardment of Be by 340-Mev Protons

James DeJuren

Phys. Rev. 81, 458 (1951) - Published 1 February, 1951

On the Anomalous Specific Heat of Lead Titanate

Gen Shirane and Etsuro Sawaguchi

Phys. Rev. 81, 458 (1951) - Published 1 February, 1951

A Note on the Distribution of Impurities in Alkali Halides

E. Burstein, J. J. Oberly, B. W. Henvis, and J. W. Davisson

Phys. Rev. 81, 459 (1951) - Published 1 February, 1951

Quantum Efficiency of Bismuth Counters for Electromagnetic Radiation of 0.07-Mev to 2.8-Mev Energy

R. J. Hart, K. Russel, and R. M. Steffen

Phys. Rev. 81, 460 (1951) - Published 1 February, 1951

The Beta-Spectrum of ${Tc}^{99}$

S. I. Taimuty

Phys. Rev. 81, 461 (1951) - Published 1 February, 1951

The Absence of Atmospheric Ethylene

J. H. Shaw and H. H. Claassen

Phys. Rev. 81, 462 (1951) - Published 1 February, 1951

Scintillation Spectra of ${As}^{76}$

Joe Keagy Bair and Fred Maienschein

Phys. Rev. 81, 463 (1951) - Published 1 February, 1951

Protons and the Aurora

C. W. Gartlein

Phys. Rev. 81, 463 (1951) - Published 1 February, 1951

Penetration and Diffusion of X-Rays. Calculation of Spatial Distributions by Polynomial Expansion

L. V. Spencer and U. Fano

Phys. Rev. 81, 464 (1951) - Published 1 February, 1951

Spontaneous Fission in ${Cm}^{242}$

G. C. Hanna, B. G. Harvey, N. Moss, and P. R. Tunnicliffe

Phys. Rev. 81, 466 (1951) - Published 1 February, 1951

Low Temperature Resistance Minimum in Magnesium Measured by a Mutual Inductance Method

H. E. Rorschach and Melvin A. Herlin

Phys. Rev. 81, 467 (1951) - Published 1 February, 1951

Detection of Gamma-Ray Polarization by Pair Production

G. C. Wick

Phys. Rev. 81, 467 (1951) - Published 1 February, 1951

The Masses of the Negative and Positive Electrons

Jesse W. M. DuMond

Phys. Rev. 81, 468 (1951) - Published 1 February, 1951

The Half-Life of ${Na}^{24}$

J. H. Sreb

Phys. Rev. 81, 469 (1951) - Published 1 February, 1951

Choice of Gauge in London's Approach to the Theory of Superconductivity

J. Bardeen

Phys. Rev. 81, 469 (1951) - Published 1 February, 1951

Crystalline Magnetic Anisotropy in Zinc Manganese Ferrite

J. K. Galt, W. A. Yager, J. P. Remeika, and F. R. Merritt

Phys. Rev. 81, 470 (1951) - Published 1 February, 1951

The Absence of Cross-Over Transitions in Tellurium Isomers

R. D. Hill

Phys. Rev. 81, 470 (1951) - Published 1 February, 1951

Multiple Scattering of Electron Pairs from ( $Li, p$ ) Gamma-Rays in Photographic Emulsions

L. Voyvodic and E. Pickup

Phys. Rev. 81, 471 (1951) - Published 1 February, 1951

Electron Bombardment Induced Conductivity in Germanium Point Contact Rectifiers

A. R. Moore and F. Herman

Phys. Rev. 81, 472 (1951) - Published 1 February, 1951

Photo-Disintegration of Copper

P. R. Byerly, Jr. and W. E. Stephens

Phys. Rev. 81, 473 (1951) - Published 1 February, 1951

Measurement of Hole Diffusion in $n$ -Type Germanium

F. S. Goucher

Phys. Rev. 81, 475 (1951) - Published 1 February, 1951

The ${Li}^{6} (n, α) H^{3}$ Reaction Spectrum

Ugo Facchini, Emilio Gatti, and Elio Germagnoli

Phys. Rev. 81, 475 (1951) - Published 1 February, 1951

Ferromagnetic Resonance in Various Ferrites

W. A. Yager, F. R. Merritt, and Charles Guillaud

Phys. Rev. 81, 477 (1951) - Published 1 February, 1951

Precipitation and the Domain Structure of Alnico 5

A. H. Geisler

Phys. Rev. 81, 478 (1951) - Published 1 February, 1951

Gamma-Alpha-Reaction in ${Rb}^{87}$

R. N. H. Haslam and H. M. Skarsgard

Phys. Rev. 81, 479 (1951) - Published 1 February, 1951

The First Excited State of ${Be}^{7}$ from the ${Li}^{7} (p, n) {Be}^{7}$ Reaction

Harvey B. Willard and William M. Preston

Phys. Rev. 81, 480 (1951) - Published 1 February, 1951

Inelastic Scattering of Deuterons by $C^{12}$

K. K. Keller, J. B. Niedner, C. F. Wang, and F. B. Shull

Phys. Rev. 81, 481 (1951) - Published 1 February, 1951

The Angular Correlation of Photo-Electrons Ejected by Annihilation Quanta

Frank L. Hereford

Phys. Rev. 81, 482 (1951) - Published 1 February, 1951

The Radioactive Decay of $I^{131}$

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

Phys. Rev. 81, 482 (1951) - Published 1 February, 1951

Magnetic Structure of Magnetite and Its Use in Studying the Neutron Magnetic Interaction

C. G. Shull, E. O. Wollan, and W. A. Strauser

Phys. Rev. 81, 483 (1951) - Published 1 February, 1951

Differential Multiplicity in Meson Production

Kurt Sitte

Phys. Rev. 81, 484 (1951) - Published 1 February, 1951

The Disintegration of ${As}^{77}$

Robert Canada and Allan C. G. Mitchell

Phys. Rev. 81, 485 (1951) - Published 1 February, 1951

The Neutron Capture Cross Section of ${Am}^{241}$

G. C. Hanna, B. G. Harvey, and N. Moss

Phys. Rev. 81, 486 (1951) - Published 1 February, 1951

Odd-Even Effect in Neutron Capture Gamma-Ray Spectra

Bernard Hamermesh

Phys. Rev. 81, 487 (1951) - Published 1 February, 1951