Volume 94, Issue 4

May 1954

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ARTICLES

Magneto-Hydrodynamic Waves in Liquid Sodium

Bo Lehnert

Phys. Rev. 94, 815 (1954) - Published 15 May, 1954

Superfluidity and Dissipative Processes in Liquid He II

J. G. Dash

Phys. Rev. 94, 825 (1954) - Published 15 May, 1954

Self-Diffusion and Ionic Conductivity in Sodium Bromide

H. W. Schamp, Jr. and E. Katz

Phys. Rev. 94, 828 (1954) - Published 15 May, 1954

The Magnetic Susceptibility of the Transition Elements

C. J. Kriessman and Herbert B. Callen

Phys. Rev. 94, 837 (1954) - Published 15 May, 1954

Some Optical Properties of MgO in the Vacuum Ultraviolet

Peter D. Johnson

Phys. Rev. 94, 845 (1954) - Published 15 May, 1954

Cation Distributions in Mixed Ferrites

J. Samuel Smart

Phys. Rev. 94, 847 (1954) - Published 15 May, 1954

Elastic Spectrum of Zinc from the Temperature Scattering of X-Rays

R. E. Joynson

Phys. Rev. 94, 851 (1954) - Published 15 May, 1954

Pressure Effects in Phosphorescence

L. Reiffel

Phys. Rev. 94, 856 (1954) - Published 15 May, 1954

Effect of Neutron Bombardment on a Zinc Sulfide Phosphor

Alan W. Smith and John Turkevich

Phys. Rev. 94, 857 (1954) - Published 15 May, 1954

On the Theory of X-Ray Small-Angle Scattering

Yin-Yuan Li and R. Smoluchowski

Phys. Rev. 94, 866 (1954) - Published 15 May, 1954

Electrical Properties of Single Crystals and Thin Films of PbSe and PbTe

S. J. Silverman and H. Levinstein

Phys. Rev. 94, 871 (1954) - Published 15 May, 1954

Avalanche Breakdown in Silicon

K. G. McKay

Phys. Rev. 94, 877 (1954) - Published 15 May, 1954

The Hyperfine Structure of the $3 P_{\frac{3}{2}}$ State of ${Na}^{23}$

Paul L. Sagalyn

Phys. Rev. 94, 885 (1954) - Published 15 May, 1954

Variations of Hydrogen Rotational Magnetic Moments with Rotational Quantum Number and with Isotopic Mass

R. G. Barnes, P. J. Bray, and N. F. Ramsey

Phys. Rev. 94, 893 (1954) - Published 15 May, 1954

Pressure Shift in Helium $λ 5875$

John R. Holmes and Leon Pape

Phys. Rev. 94, 902 (1954) - Published 15 May, 1954

Magnetic Quenching of the Positronium Decay

Otto Halpern

Phys. Rev. 94, 904 (1954) - Published 15 May, 1954

Absorption Coefficients of Air and Nitrogen for the Extreme Ultraviolet

J. P. Curtis

Phys. Rev. 94, 908 (1954) - Published 15 May, 1954

Mobilities of Atomic and Molecular Ions in the Noble Gases

Manfred A. Biondi and Lorne M. Chanin

Phys. Rev. 94, 910 (1954) - Published 15 May, 1954

Annihilation of Positrons in Flight

J. B. Gerhart, B. C. Carlson, and R. Sherr

Phys. Rev. 94, 917 (1954) - Published 15 May, 1954

A Precise Momentum Measurement of the $F$ Line of Thorium B

D. I. Meyer and F. H. Schmidt

Phys. Rev. 94, 927 (1954) - Published 15 May, 1954

Effect of Atomic Electron Screening on the Shape of Forbidden Beta Spectra

R. H. Good, Jr.

Phys. Rev. 94, 931 (1954) - Published 15 May, 1954

The Pickup Reactions $B^{10} (n, d) {Be}^{9}$ for 14-Mev Neutrons

F. L. Ribe and J. D. Seagrave

Phys. Rev. 94, 934 (1954) - Published 15 May, 1954

Gamma Rays from the Inelastic Scattering of 14-Mev Neutrons in $C^{12}$ and $O^{16}$

L. C. Thompson and J. R. Risser

Phys. Rev. 94, 941 (1954) - Published 15 May, 1954

Polarization from Isolated Resonances

A. Simon and T. A. Welton

Phys. Rev. 94, 943 (1954) - Published 15 May, 1954

Neutron-Deficient Activities of Holmium

Thomas H. Handley

Phys. Rev. 94, 945 (1954) - Published 15 May, 1954

Comparison of Nuclear and Gamma-Ray Energy Scales

K. W. Jones, R. A. Douglas, M. T. McEllistrem, and H. T. Richards

Phys. Rev. 94, 947 (1954) - Published 15 May, 1954

The Half-Life of $U^{232}$

P. A. Sellers, C. M. Stevens, and M. H. Studier

Phys. Rev. 94, 952 (1954) - Published 15 May, 1954

Manganese-57

B. L. Cohen, R. A. Charpie, T. H. Handley, and E. L. Olson

Phys. Rev. 94, 953 (1954) - Published 15 May, 1954

The Three-Photon Annihilation of Positrons and Electrons

S. DeBenedetti and R. T. Siegel

Phys. Rev. 94, 955 (1954) - Published 15 May, 1954

Transmission of 0-40 kev Electrons by Thin Films with Application to Beta-Ray Spectroscopy

R. O. Lane and D. J. Zaffarano

Phys. Rev. 94, 960 (1954) - Published 15 May, 1954

Radiations of 53-Min $I^{134}$ and 86-Sec $I^{136}$

Michael McKeown and Seymour Katcoff

Phys. Rev. 94, 965 (1954) - Published 15 May, 1954

Ytterbium-167

Thomas H. Handley and Elmer L. Olson

Phys. Rev. 94, 968 (1954) - Published 15 May, 1954

Yields of Fission Products from $U^{238}$ Irradiated with Fission Spectrum Neutrons

R. N. Keller, E. P. Steinberg, and L. E. Glendenin

Phys. Rev. 94, 969 (1954) - Published 15 May, 1954

Curium Isotopes 246 and 247 from Pile-Irradiated Plutonium

C. M. Stevens, M. H. Studier, P. R. Fields, J. F. Mech, P. A. Sellers, A. M. Friedman, H. Diamond, and J. R. Huizenga

Phys. Rev. 94, 974 (1954) - Published 15 May, 1954

Gamma Rays from $N^{15} (p, α γ) C^{12}$ and $N^{15} (p, γ) O^{16}$

Alfred A. Kraus, Jr.

Phys. Rev. 94, 975 (1954) - Published 15 May, 1954

Structure and Composition of Air Shower Cores

Harold L. Kasnitz and Kurt Sitte

Phys. Rev. 94, 977 (1954) - Published 15 May, 1954

Development of Air Showers in the Atmosphere

Kurt Sitte, Don L. Stierwalt, and Irving L. Kofsky

Phys. Rev. 94, 988 (1954) - Published 15 May, 1954

Analysis of 405-Mev Proton and 222-Mev Negative Pion Stars

A. D. Sprague, D. M. Haskin, R. G. Glasser, and Marcel Schein

Phys. Rev. 94, 994 (1954) - Published 15 May, 1954

Spallation Studies of Bismuth

W. E. Bennett

Phys. Rev. 94, 997 (1954) - Published 15 May, 1954

High-Energy Photoproton Production by 325-Mev Bremsstrahlung Radiation

B. T. Feld, R. D. Godbole, A. Odian, F. Scherb, P. C. Stein, and A. Wattenberg

Phys. Rev. 94, 1000 (1954) - Published 15 May, 1954

$μ$ -Meson Decay Spectrum

J. H. Vilain and Robert W. Williams

Phys. Rev. 94, 1011 (1954) - Published 15 May, 1954

Cosmic Radiation Intensity-Time Variations and Their Origin. IV. Increases Associated with Solar Flares

John Firor

Phys. Rev. 94, 1017 (1954) - Published 15 May, 1954

Solar Magnetic Moment and Cosmic-Ray Effects Associated with Solar Flares

S. B. Treiman

Phys. Rev. 94, 1029 (1954) - Published 15 May, 1954

Cosmic Radiation Intensity-Time Variations and Their Origin. V. The Daily Variation of Intensity

J. W. Firor, W. H. Fonger, and J. A. Simpson

Phys. Rev. 94, 1031 (1954) - Published 15 May, 1954

Classical Scattering of Mesons

S. P. Pandya

Phys. Rev. 94, 1037 (1954) - Published 15 May, 1954

Nuclear Interaction of Fast $μ$ Mesons

Martin Annis, Homer C. Wilkins, and John D. Miller

Phys. Rev. 94, 1038 (1954) - Published 15 May, 1954

Decay of $τ$ Mesons of Known Charge

R. H. Dalitz

Phys. Rev. 94, 1046 (1954) - Published 15 May, 1954

Single-Time Formalisms from Covariant Equations

Abraham Klein

Phys. Rev. 94, 1052 (1954) - Published 15 May, 1954

Effect of Negative Energy Components in the Two-Nucleon System

R. Arnowitt and S. Gasiorowicz

Phys. Rev. 94, 1057 (1954) - Published 15 May, 1954

The Unitarity of the $U$ Operator

H. Ekstein

Phys. Rev. 94, 1063 (1954) - Published 15 May, 1954

Letters to the Editor

Effect of Hydrostatic Pressure on the Superconducting Transition of Tin

M. Garber and D. E. Mapother

Phys. Rev. 94, 1065 (1954) - Published 15 May, 1954

Hall Coefficient in Germanium

T. C. Harman, R. K. Willardson, and A. C. Beer

Phys. Rev. 94, 1065 (1954) - Published 15 May, 1954

Electron Spin Resonance in Metals at Low Fields

H. S. Gutowsky and P. J. Frank

Phys. Rev. 94, 1067 (1954) - Published 15 May, 1954

High-Field Effects in Germanium

Esther M. Conwell

Phys. Rev. 94, 1068 (1954) - Published 15 May, 1954

Properties of Plutonium Metal

Cyril Stanley Smith

Phys. Rev. 94, 1068 (1954) - Published 15 May, 1954

Superconducting Alloys

B. T. Matthias and E. Corenzwit

Phys. Rev. 94, 1069 (1954) - Published 15 May, 1954

Compression to 10,000 Atoms of Solid Hydrogen and Deuterium at 4.2°K

J. W. Stewart and C. A. Swenson

Phys. Rev. 94, 1069 (1954) - Published 15 May, 1954

Molecular Field Treatment of Magnetic Ordering Transitions

E. W. Elcock

Phys. Rev. 94, 1070 (1954) - Published 15 May, 1954

Pauli Principle Scattering and the Resistivity Minimum

J. S. Koehler

Phys. Rev. 94, 1071 (1954) - Published 15 May, 1954

Soft X-Ray Emission Bands in Metals

H. Jones

Phys. Rev. 94, 1072 (1954) - Published 15 May, 1954

Interpretation of Ionic Mobilities in Nitrogen

S. Geltman

Phys. Rev. 94, 1072 (1954) - Published 15 May, 1954

Electrical Conduction in Halide-Contaminated Ice

E. J. Workman, Frank K. Truby, and W. Drost-Hansen

Phys. Rev. 94, 1073 (1954) - Published 15 May, 1954

Polarization of Nucleons Elastically Scattered from Nuclei

G. A. Snow, R. M. Sternheimer, and C. N. Yang

Phys. Rev. 94, 1073 (1954) - Published 15 May, 1954

Low Excited States of $F^{19}$ . I. Proton Inelastic Scattering

R. W. Peterson, C. A. Barnes, W. A. Fowler, and C. C. Lauritsen

Phys. Rev. 94, 1075 (1954) - Published 15 May, 1954

Low Excited States of $F^{19}$ . II. Lifetime Measurements

J. Thirion, C. A. Barnes, and C. C. Lauritsen

Phys. Rev. 94, 1076 (1954) - Published 15 May, 1954

Low Excited States of $F^{19}$ . III. Coulomb Excitation by $α$ Particles

R. Sherr, C. W. Li, and R. F. Christy

Phys. Rev. 94, 1076 (1954) - Published 15 May, 1954

Low Excited States of $F^{19}$ . IV. Angular Distributions

R. F. Christy

Phys. Rev. 94, 1077 (1954) - Published 15 May, 1954

Short-Lived Isomeric States of ${Ag}^{110}$ and ${In}^{116}$

F. I. Boley

Phys. Rev. 94, 1078 (1954) - Published 15 May, 1954

Half-Life and Beta Decay of the Long-Lived Niobium-94

Mario A. Rollier and Einar Saeland

Phys. Rev. 94, 1079 (1954) - Published 15 May, 1954

Nuclear Properties of Some Isotopes of Californium, Elements 99 and 100

G. R. Choppin, S. G. Thompson, A. Ghiorso, and B. G. Harvey

Phys. Rev. 94, 1080 (1954) - Published 15 May, 1954

New Isotopes of Americium, Berkelium and Californium

A. Ghiorso, S. G. Thompson, G. R. Choppin, and B. G. Harvey

Phys. Rev. 94, 1081 (1954) - Published 15 May, 1954

Interaction of High-Energy Pions with Nuclei

E. D. Courant

Phys. Rev. 94, 1081 (1954) - Published 15 May, 1954

Magnetic Storm Effect on Cosmic Radiation

Hannes Alfvén

Phys. Rev. 94, 1082 (1954) - Published 15 May, 1954

Energy Levels in $W^{182}$

C. M. Fowler, H. W. Kruse, V. Keshishian, R. J. Klotz, and G. P. Mellor

Phys. Rev. 94, 1082 (1954) - Published 15 May, 1954

Identification of Californium Isotopes 249, 250, 251, and 252 from Pile-Irradiated Plutonium

H. Diamond, L. B. Magnusson, J. F. Mech, C. M. Stevens, A. M. Friedman, M. H. Studier, P. R. Fields, and J. R. Huizenga

Phys. Rev. 94, 1083 (1954) - Published 15 May, 1954

Inelastic Scattering of 190-Mev Electrons in Beryllium

J. A. McIntyre, B. Hahn, and R. Hofstadter

Phys. Rev. 94, 1084 (1954) - Published 15 May, 1954

Pion Production Ratios

D. C. Peaslee

Phys. Rev. 94, 1085 (1954) - Published 15 May, 1954

Correction to Deuteron Stripping Cross Sections

Larry Schecter and Warren Heckrotte

Phys. Rev. 94, 1086 (1954) - Published 15 May, 1954

Some ( $d, p$ ) Reactions in Ni and the Statistical Theory of Nuclear Reactions

William W. Pratt

Phys. Rev. 94, 1086 (1954) - Published 15 May, 1954

Polarization of High-Energy Protons Scattered by Complex Nuclei

S. Tamor

Phys. Rev. 94, 1087 (1954) - Published 15 May, 1954

Polarization of Fast Protons Scattered by Nuclei

G. Takeda and K. M. Watson

Phys. Rev. 94, 1087 (1954) - Published 15 May, 1954

Neutron Absorption Cross Section of $U^{235}$ at 2200 m/sec

H. Palevsky, R. S. Carter, R. M. Eisberg, and D. J. Hughes

Phys. Rev. 94, 1088 (1954) - Published 15 May, 1954

Covariant Formulation of the Tamm-Dancoff Method

S. S. Schweber

Phys. Rev. 94, 1089 (1954) - Published 15 May, 1954