Volume 76, Issue 10

November 1949

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ARTICLES

Inversion Frequency of Ammonia and Molecular Interaction

H. Margenau

Phys. Rev. 76, 1423 (1949) - Published 15 November, 1949

Angular Distribution of 10.8 Mev Deuterons Scattered by Deuterons

J. C. Allred, K. W. Erickson, J. L. Fowler, and E. J. Stovall, Jr.

Phys. Rev. 76, 1430 (1949) - Published 15 November, 1949

On the Production of II-Mesons by Nucleon-Nucleon Collisions

Cecile Morette

Phys. Rev. 76, 1432 (1949) - Published 15 November, 1949

Relative Cross Sections for Pair Production at 17.6 Mev

R. L. Walker

Phys. Rev. 76, 1440 (1949) - Published 15 November, 1949

Yield and Angular Distribution of the D-D Neutrons

G. T. Hunter and H. T. Richards

Phys. Rev. 76, 1445 (1949) - Published 15 November, 1949

Disintegration of $I^{124}$ and $I^{126}$

Allan C. G. Mitchell, J. Y. Mei, Fred C. Maienschein, and Charles L. Peacock

Phys. Rev. 76, 1450 (1949) - Published 15 November, 1949

Radioactive ${In}^{107}$ , ${In}^{108}$ , ${In}^{109}$ , and ${Sn}^{108}$

E. C. Mallary and M. L. Pool

Phys. Rev. 76, 1454 (1949) - Published 15 November, 1949

Note on the Decay of the $π$ -Meson

M. Ruderman and R. Finkelstein

Phys. Rev. 76, 1458 (1949) - Published 15 November, 1949

Precise Measurement of the Gyromagnetic Ratio of ${He}^{3}$

Herbert L. Anderson

Phys. Rev. 76, 1460 (1949) - Published 15 November, 1949

On the Production of Electron Pairs in the Field of an Electron

J. A. Phillips and P. Gerald Kruger

Phys. Rev. 76, 1471 (1949) - Published 15 November, 1949

Neutron Production at Mountain Altitudes

C. G. Montgomery and A. R. Tobey

Phys. Rev. 76, 1478 (1949) - Published 15 November, 1949

The Analysis of Bursts of Cosmic-Ray Ionization

C. G. Montgomery and D. D. Montgomery

Phys. Rev. 76, 1482 (1949) - Published 15 November, 1949

Narrow Air Showers of Cosmic Rays

John Wei and C. G. Montgomery

Phys. Rev. 76, 1488 (1949) - Published 15 November, 1949

The Paschen-Back Effect in N $H_{3}$ and $N_{2}$ O Microwave Spectra

C. K. Jen

Phys. Rev. 76, 1494 (1949) - Published 15 November, 1949

Impulse Breakdown in the $10^{- 9}$ -Sec. Range of Air at Atmospheric Pressure

R. C. Fletcher

Phys. Rev. 76, 1501 (1949) - Published 15 November, 1949

On Infinite Relativistic Particle Matrices

Walter Wessel

Phys. Rev. 76, 1512 (1949) - Published 15 November, 1949

Sound Propagation in Chemically Active Media

Leonard Liebermann

Phys. Rev. 76, 1520 (1949) - Published 15 November, 1949

The Energy Level Density and Partition Function of Nuclei

D. Ter Haar

Phys. Rev. 76, 1525 (1949) - Published 15 November, 1949

Letters to the Editor

Theory of the Formation of Powder Patterns on Ferromagnetic Crystals

Charles Kittel

Phys. Rev. 76, 1527 (1949) - Published 15 November, 1949

Nuclear Moments of ${Mg}^{25}$

M. F. Crawford, F. M. Kelly, A. L. Schawlow, and W. M. Gray

Phys. Rev. 76, 1527 (1949) - Published 15 November, 1949

Nuclear Moments of ${}_{39}Y^{89}$

M. F. Crawford and N. Olson

Phys. Rev. 76, 1528 (1949) - Published 15 November, 1949

The Nuclear Spin of ${He}^{3}$

A. E. Douglas and G. Herzberg

Phys. Rev. 76, 1529 (1949) - Published 15 November, 1949

Inversion Spectrum of Ammonia

A. H. Sharbaugh, T. C. Madison, and J. K. Bragg

Phys. Rev. 76, 1529 (1949) - Published 15 November, 1949

The Optical Properties of Semiconductors. I. The Reflectivity of Germanium Semiconductors

K. Lark-Horovitz and K. W. Meissner

Phys. Rev. 76, 1530 (1949) - Published 15 November, 1949

Optical Properties of Semiconductors. II. Infra-Red Transmission of Germanium

M. Becker and H. Y. Fan

Phys. Rev. 76, 1530 (1949) - Published 15 November, 1949

ARTICLES

Optical Properties of Semiconductors. III. Infra-Red Transmission of Silicon

M. Becker and H. Y. Fan

Phys. Rev. 76, 1531 (1949) - Published 15 November, 1949

Letters to the Editor

Protons from the Bombardment of ${He}^{3}$ by Deuterons

L. D. Wyly, V. L. Sailor, and D. G. Ott

Phys. Rev. 76, 1532 (1949) - Published 15 November, 1949

Note on Methane in the Infra-Red Solar Spectrum

Robert R. McMath, Orren C. Mohler, A. Keith Pierce, and Leo Goldberg

Phys. Rev. 76, 1533 (1949) - Published 15 November, 1949

Atmospheric HDO

H. A. Gebbie, W. R. Harding, C. Hilsum, and V. Roberts

Phys. Rev. 76, 1534 (1949) - Published 15 November, 1949

Disintegration Electrons from ${Li}_{3}^{8}$ Nuclei Ejected in Cosmic Stars

E. Pickup and L. Voyvodic

Phys. Rev. 76, 1534 (1949) - Published 15 November, 1949

Gamma-Ray of $K^{40}$

G. A. Sawyer and M. L. Wiedenbeck

Phys. Rev. 76, 1535 (1949) - Published 15 November, 1949

On the Shape of the Positron Spectrum of ${Cu}^{61}$

George E. Owen and C. Sharp Cook

Phys. Rev. 76, 1536 (1949) - Published 15 November, 1949

A. Germanium Counter

Kenneth G. McKay

Phys. Rev. 76, 1537 (1949) - Published 15 November, 1949

Two-Component Wave Equations

J. Serpe

Phys. Rev. 76, 1538 (1949) - Published 15 November, 1949

The Effect of Nuclear Shells upon the Pattern of the Atomic Species

William D. Harkins

Phys. Rev. 76, 1538 (1949) - Published 15 November, 1949

The Ratio of $L_{I}$ to $K$ Capture

M. E. Rose and J. L. Jackson

Phys. Rev. 76, 1540 (1949) - Published 15 November, 1949

The Disintegration Scheme of ${Tm}^{170}$

J. S. Fraser

Phys. Rev. 76, 1540 (1949) - Published 15 November, 1949

ERRATA

Erratum: Altitude Dependence of Penetrating Particles Slowed Down After Traversing 15 Cm of Lead

Marcello Conversi

Phys. Rev. 76, 1541 (1949) - Published 15 November, 1949

Letters to the Editor

Magnetic Multipole Internal Conversion

N. Tralli and I. S. Lowen

Phys. Rev. 76, 1541 (1949) - Published 15 November, 1949

A New Gyromagnetic Effect

S. J. Barnett and Louis A. Giamboni

Phys. Rev. 76, 1542 (1949) - Published 15 November, 1949