Volume 99, Issue 4

August 1955

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HIGHLIGHTED ARTICLES

FEATURED IN PHYSICS

The Maser—New Type of Microwave Amplifier, Frequency Standard, and Spectrometer

J. P. Gordon, H. J. Zeiger, and C. H. Townes

Phys. Rev. 99, 1264 (1955) - Published 15 August, 1955

ARTICLES

"Virial Theorem" for the Flow of Energy

R. Eisenschitz

Phys. Rev. 99, 1059 (1955) - Published 15 August, 1955

Behavior of a Bose System

G. V. Chester

Phys. Rev. 99, 1062 (1955) - Published 15 August, 1955

Quantum Effects in the Interaction between Free Electrons and Electromagnetic Fields

P. S. Faragó and G. Marx

Phys. Rev. 99, 1063 (1955) - Published 15 August, 1955

Variational Calculation of Electron Scattering by a Static Potential

Lyman Mower

Phys. Rev. 99, 1065 (1955) - Published 15 August, 1955

Effect of Radiation from Solar Flares on the Ionosphere and the Earth's Magnetic Field

R. N. Sedra and I. B. Hazzaa

Phys. Rev. 99, 1070 (1955) - Published 15 August, 1955

Growth of Current between Parallel Plates

P. M. Davidson

Phys. Rev. 99, 1072 (1955) - Published 15 August, 1955

$F^{'}$ and $K$ Centers in Additively Colored KCl Crystals

Felix E. Geiger, Jr.

Phys. Rev. 99, 1075 (1955) - Published 15 August, 1955

Hall Effect in Permalloys

Simon Foner

Phys. Rev. 99, 1079 (1955) - Published 15 August, 1955

Long-Wavelength Neutron Transmission as an Absolute Method for Determining the Concentration of Lattice Defects in Crystals

J. J. Antal, R. J. Weiss, and G. J. Dienes

Phys. Rev. 99, 1081 (1955) - Published 15 August, 1955

Calculation of the Entropies of Lattice Defects

H. B. Huntington, G. A. Shirn, and E. S. Wajda

Phys. Rev. 99, 1085 (1955) - Published 15 August, 1955

Electronic States in a Perturbed Periodic Lattice

Paula Feuer

Phys. Rev. 99, 1092 (1955) - Published 15 August, 1955

Revised Houston Method for Counting Lattice Frequencies

Jenn-Lin Hwang

Phys. Rev. 99, 1098 (1955) - Published 15 August, 1955

Electroluminescence Excited by Short Field Pulses

Frank Matossi and Sol Nudelman

Phys. Rev. 99, 1100 (1955) - Published 15 August, 1955

Thermal Conductivity of Germanium at Ambient Temperatures

Kathryn A. McCarthy and Stanley S. Ballard

Phys. Rev. 99, 1104 (1955) - Published 15 August, 1955

Infrared Quenching and a Unified Description of Photoconductivity Phenomena in Cadmium Sulfide and Selenide

Richard H. Bube

Phys. Rev. 99, 1105 (1955) - Published 15 August, 1955

Frequency Dependence of Magnetic Resonance in $α$ - ${Fe}_{2}$ $O_{3}$

Hiroo Kumagai, Hidetaro Abe, Kazuo Ôno, Izuo Hayashi, Junji Shimada, and Kenzo Iwanaga

Phys. Rev. 99, 1116 (1955) - Published 15 August, 1955

Atomic Heat of Graphite between 1 and 20°K

P. H. Keesom and N. Pearlman

Phys. Rev. 99, 1119 (1955) - Published 15 August, 1955

Density Effect in Ionization Energy Loss of Charged Particles

Jacob Neufeld and R. H. Ritchie

Phys. Rev. 99, 1125 (1955) - Published 15 August, 1955

Dipolar Sums in the Primitive Cubic Lattices

M. H. Cohen and F. Keffer

Phys. Rev. 99, 1128 (1955) - Published 15 August, 1955

Dipolar Ferromagnetism at 0°K

M. H. Cohen and F. Keffer

Phys. Rev. 99, 1135 (1955) - Published 15 August, 1955

Electron-Phonon Interaction in Metals

John Bardeen and David Pines

Phys. Rev. 99, 1140 (1955) - Published 15 August, 1955

Intrinsic Optical Absorption in Single-Crystal Germanium and Silicon at 77°K and 300°K

W. C. Dash and R. Newman

Phys. Rev. 99, 1151 (1955) - Published 15 August, 1955

Surface Barrier Analysis for Metals by Means of Schottky Deviations

D. W. Juenker

Phys. Rev. 99, 1155 (1955) - Published 15 August, 1955

Electrical Behavior of Barium Titanatge Single Crystals at Low Temperatures

H. H. Wieder

Phys. Rev. 99, 1161 (1955) - Published 15 August, 1955

Pressure Dependence of de Haas-van Alphen Parameters in Bismuth

W. C. Overton, Jr. and Ted G. Berlincourt

Phys. Rev. 99, 1165 (1955) - Published 15 August, 1955

Fast Neutron Bombardment of $p$ -Type Germanium

J. W. Cleland, J. H. Crawford, Jr., and J. C. Pigg

Phys. Rev. 99, 1170 (1955) - Published 15 August, 1955

Properties of Grain Boundaries in Gold-Doped Germanium

A. G. Tweet

Phys. Rev. 99, 1182 (1955) - Published 15 August, 1955

Hot Electron Problem in Semiconductors with Spheroidal Energy Surfaces

Motoichi Shibuya

Phys. Rev. 99, 1189 (1955) - Published 15 August, 1955

$T - F$ Emission: Experimental Measurement of the Average Electron Current Density from Tungsten

W. P. Dyke, J. P. Barbour, E. E. Martin, and J. K. Trolan

Phys. Rev. 99, 1192 (1955) - Published 15 August, 1955

Hall Effect and Density of States in Germanium

E. M. Conwell

Phys. Rev. 99, 1195 (1955) - Published 15 August, 1955

Scintillation Response of Anthracene to Low-Energy Protons and Helium Ions

E. J. Zimmerman

Phys. Rev. 99, 1199 (1955) - Published 15 August, 1955

Ferromagnetic Resonance in Two Nickel-Iron Ferrites

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

Phys. Rev. 99, 1203 (1955) - Published 15 August, 1955

Magnetostriction and Permeability of Magnetite and Cobalt-Substituted Magnetite

L. R. Bickford, Jr., J. Pappis, and J. L. Stull

Phys. Rev. 99, 1210 (1955) - Published 15 August, 1955

Specific Heat Anomaly of Ferroelectric Cadmium Niobate at the Curie Temperature

H. R. Danner and R. Pepinsky

Phys. Rev. 99, 1215 (1955) - Published 15 August, 1955

Influence of Alternating Electric Fields on the Light Emission of Some Phosphors

I. T. Steinberger, W. Low, and E. Alexander

Phys. Rev. 99, 1217 (1955) - Published 15 August, 1955

Paramagnetic Resonance Absorption in Glass

R. H. Sands

Phys. Rev. 99, 1222 (1955) - Published 15 August, 1955

Recombination of Injected Carriers at Dislocation Edges in Semiconductors

J. P. McKelvey and R. L. Longini

Phys. Rev. 99, 1227 (1955) - Published 15 August, 1955

Relation of Magnetic Structure to Electrical Conductivity in NiO and Related Compounds

R. R. Heikes

Phys. Rev. 99, 1232 (1955) - Published 15 August, 1955

Avalanche Breakdown in Germanium

S. L. Miller

Phys. Rev. 99, 1234 (1955) - Published 15 August, 1955

Gyromagnetic Ratio of Iron at Low Magnetic Intensities

G. G. Scott

Phys. Rev. 99, 1241 (1955) - Published 15 August, 1955

Electrical Properties of Plastically Deformed Germanium

A. G. Tweet

Phys. Rev. 99, 1245 (1955) - Published 15 August, 1955

Permanent Magnetic Moments of a Superconducting Sphere

Tom S. Teasdale

Phys. Rev. 99, 1248 (1955) - Published 15 August, 1955

Ferromagnetic Hall Coefficient of Nickel Alloys

Albert I. Schindler and Edward I. Salkovitz

Phys. Rev. 99, 1251 (1955) - Published 15 August, 1955

Hyperfine Structure in the Inversion Spectrum of $N^{14}$ $H_{3}$ by a New High-Resolution Microwave Spectrometer

J. P. Gordon

Phys. Rev. 99, 1253 (1955) - Published 15 August, 1955

FEATURED IN PHYSICS

The Maser—New Type of Microwave Amplifier, Frequency Standard, and Spectrometer

J. P. Gordon, H. J. Zeiger, and C. H. Townes

Phys. Rev. 99, 1264 (1955) - Published 15 August, 1955

Resonance Transitions in Molecular Beam Experiments. I. General Theory of Transitions in a Rotating Magnetic Field

Harold Salwen

Phys. Rev. 99, 1274 (1955) - Published 15 August, 1955

Classical Calculation of Differential Cross Section for Scattering from a Coulomb Potential with Exponential Screening

Edgar Everhart, Gerald Stone, and R. J. Carbone

Phys. Rev. 99, 1287 (1955) - Published 15 August, 1955

Use of the Statistical Field Approximation in Molecular Physics

J. W. Sheldon

Phys. Rev. 99, 1291 (1955) - Published 15 August, 1955

Effects of the Bending Mode of Vibration on the Hyperfine Structure of ICN

Ali Javan

Phys. Rev. 99, 1302 (1955) - Published 15 August, 1955

Absorption Studies of Helium Metastable Atoms and Molecules

A. V. Phelps

Phys. Rev. 99, 1307 (1955) - Published 15 August, 1955

Velocity Distributions in Potassium and Thallium Atomic Beams

R. C. Miller and P. Kusch

Phys. Rev. 99, 1314 (1955) - Published 15 August, 1955

Spin Resonance in Metals as a Function of the Overhauser Effect

Jerome I. Kaplan

Phys. Rev. 99, 1322 (1955) - Published 15 August, 1955

Radiations from a Spinning Rod

David Park

Phys. Rev. 99, 1324 (1955) - Published 15 August, 1955

Letters to the Editor

Number of Vacancies Created by Heavy Corpuscular Radiation

J. Neufeld and W. S. Snyder

Phys. Rev. 99, 1326 (1955) - Published 15 August, 1955

Dipole Fields and the Helium Film

N. G. McCrum and J. C. Eisenstein

Phys. Rev. 99, 1326 (1955) - Published 15 August, 1955

Andronikashvilli Disk Measurements in Liquid Helium-3—Helium-4 Mixtures

John R. Pellam

Phys. Rev. 99, 1327 (1955) - Published 15 August, 1955

Impedance Measurements on CdS Crystals

Hartmut Kallmann, Bernard Kramer, and Peter Mark

Phys. Rev. 99, 1328 (1955) - Published 15 August, 1955

Magnetic Indications of Electronic Structure of the Conduction Band in Ge

J. H. Crawford, Jr., H. C. Schweinler, and D. K. Stevens

Phys. Rev. 99, 1330 (1955) - Published 15 August, 1955

Streamer Theory and the Value of $\frac{α}{p}$

K. Hasebe and K. Yamamoto

Phys. Rev. 99, 1331 (1955) - Published 15 August, 1955

Dependence of Light Amplification in Phosphors on Light Intensity

Frank Matossi

Phys. Rev. 99, 1332 (1955) - Published 15 August, 1955

Deformation-Induced Charge Flow in NaCl Crystals

D. B. Fischbach and A. S. Nowick

Phys. Rev. 99, 1333 (1955) - Published 15 August, 1955

Self-Diffusion and Ionic Conduction in Crystals

Ernst Katz

Phys. Rev. 99, 1334 (1955) - Published 15 August, 1955

Outgoing and Ingoing Waves in Final States and Bremsstrahlung

Haakon Olsen

Phys. Rev. 99, 1335 (1955) - Published 15 August, 1955

Preliminary Study of the Electrical Properties of a Semiconducting Diamond

James J. Brophy

Phys. Rev. 99, 1336 (1955) - Published 15 August, 1955