Recent Articles

Dynamical Model of a Conspiring Pion

R. Sugar and R. Blankenbecler

Phys. Rev. Lett. 20, 1014 (1968) - Published 29 April, 1968

Lower Bounds on Pion-Pion and Pion-Nucleon Amplitudes from Crossed-Channel Unitarity

S. M. Roy

Phys. Rev. Lett. 20, 1016 (1968) - Published 29 April, 1968

$N^{+}$ + $O^{-}$ Neutralization Cross-Section Measurements Using a Superimposed-Beam Technique

W. Aberth, J. R. Peterson, D. C. Lorents, and C. J. Cook

Phys. Rev. Lett. 20, 979 (1968) - Published 29 April, 1968

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The two-body $N^{+}$ + $O^{-}$ neutralization cross section has been measured via a superimposed-beam technique. The energy range in the barycentric coordinate system is 0.1-86 eV with about 0.1-eV resolution. The measured value of the neutralization cross section, $Q$ , times the relative speed, $v$ , is approximately constant (9× $10^{- 8}$ ${cm}^{3}$ /sec), except below 0.5 eV, where $Qv$ increases rapidly with decreasing energy.

Nuclear Spin Relaxation in Polyatomic Gases: A New Effect

Ronald Y. Dong and Myer Bloom

Phys. Rev. Lett. 20, 981 (1968) - Published 29 April, 1968

Direct Observation of Methyl Librations in Neopentane

David M. Grant, Kenneth A. Strong, and R. M. Brugger

Phys. Rev. Lett. 20, 983 (1968) - Published 29 April, 1968

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The "small- $κ$ " method of neutron molecular spectroscopy has been used to observe for the first time the two librational modes, $A_{2}$ and $F_{2}$ , of the methyl groups in neopentane. Two inelastic-scattering peaks corresponding to librational modes were measured at 26 and 33 meV, the separation resulting primarily from a difference in the six-fold energy barriers governing the two rotations. Both librational motions were restricted by a dominant threefold energy barrier of +870±30 MeV.

Nuclear Spin-Lattice Relaxation Measurements by Tone-Burst Modulation

D. C. Look and D. R. Locker

Phys. Rev. Lett. 20, 987 (1968) - Published 29 April, 1968

Some Rigorous Inequalities Satisfied by the Ferromagnetic Ising Model in a Magnetic Field

George A. Baker, Jr.

Phys. Rev. Lett. 20, 990 (1968) - Published 29 April, 1968

Intrinsic Surface States in Semiconductors

R. O. Jones

Phys. Rev. Lett. 20, 992 (1968) - Published 29 April, 1968

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Recombination Time of Quasiparticles in Superconducting Aluminum

James L. Levine and S. Y. Hsieh

Phys. Rev. Lett. 20, 994 (1968) - Published 29 April, 1968

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Experimental Studies of Polarization Effects in Spin-Wave Scattering of Neutrons

T. Riste, R. M. Moon, and W. C. Koehler

Phys. Rev. Lett. 20, 997 (1968) - Published 29 April, 1968

Polarization of Atomic Radiation Excited by Electron Impact at Threshold

Robert H. McFarland and Marvin H. Mittleman

Phys. Rev. Lett. 20, 899 (1968) - Published 22 April, 1968

Observation of Quantum Phase Noise in a Laser Oscillator

A. E. Siegman and R. Arrathoon

Phys. Rev. Lett. 20, 901 (1968) - Published 22 April, 1968

Streaming Plasma Transport and Cutoff in Transverse Magnetic Fields

W. Bernstein, H. S. Ogawa, and J. M. Sellen, Jr.

Phys. Rev. Lett. 20, 903 (1968) - Published 22 April, 1968

Note on X-Ray Scattering by Argon

Dominique Levesque and Loup Verlet

Phys. Rev. Lett. 20, 905 (1968) - Published 22 April, 1968

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The structure factor measured by x-ray scattering experiments on argon is compared with the same quantities calculated with two different intermolecular potentials. We show that it is not possible to get, from the scattering data, quantitative information concerning the interaction and that the discrepancy between theory and experiment is probably due to a systematic error in the latter.

Plasma Response to the Sudden Application of an Electric Field

John S. DeGroot and Kenneth R. MacKenzie

Phys. Rev. Lett. 20, 907 (1968) - Published 22 April, 1968

Observation of Anomalous Damping and Dispersion of Hypersounds in a Binary Liquid Mixture Near the Solution Critical Point

S. H. Chen and N. Polonsky

Phys. Rev. Lett. 20, 909 (1968) - Published 22 April, 1968

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Dynamical Model of a Conspiring Pion

Lower Bounds on Pion-Pion and Pion-Nucleon Amplitudes from Crossed-Channel Unitarity

$N^{+}$ + $O^{-}$ Neutralization Cross-Section Measurements Using a Superimposed-Beam Technique

Nuclear Spin Relaxation in Polyatomic Gases: A New Effect

Direct Observation of Methyl Librations in Neopentane

Nuclear Spin-Lattice Relaxation Measurements by Tone-Burst Modulation

Some Rigorous Inequalities Satisfied by the Ferromagnetic Ising Model in a Magnetic Field

Intrinsic Surface States in Semiconductors

Recombination Time of Quasiparticles in Superconducting Aluminum

Experimental Studies of Polarization Effects in Spin-Wave Scattering of Neutrons

Polarization of Atomic Radiation Excited by Electron Impact at Threshold

Observation of Quantum Phase Noise in a Laser Oscillator

Streaming Plasma Transport and Cutoff in Transverse Magnetic Fields

Note on X-Ray Scattering by Argon

Plasma Response to the Sudden Application of an Electric Field

Observation of Anomalous Damping and Dispersion of Hypersounds in a Binary Liquid Mixture Near the Solution Critical Point

Exchange in Crystalline ${}^{3}{He}$

Strain-Induced Splitting and Polarization of Excitons Due to Exchange Interaction

Comments on "Standing Spin-Wave Resonance in `Flash-Evaporated' Permalloy Films"

Observation of Interband Transitions in Arsenic

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