Volume 23, Issue 15

S. Apsell, N. Barash-Schmidt, L. Kirsch, P. Schmidt, C. Y. Chang, R. J. Hemingway, B. V. Khoury, A. R. Stottlemyer, H. Whiteside, G. B. Yodh, M. Goldberg, K. Jaeger, C. McCarthy, B. Meadows, G. C. Moneti, J. Bartley, R. M. Dowd, J. Schneps, and G. Wolsky

Phys. Rev. Lett. 23, 884 (1969) - Published 13 October, 1969

$K^{-} p$ Backward Scattering from 1 to 2.5 GeV/c

A. S. Carroll, J. Fischer, A. Lundby, R. H. Phillips, C. L. Wang, F. Lobkowicz, A. C. Melissinos, Y. Nagashima, C. A. Smith, and S. Tewksbury

Phys. Rev. Lett. 23, 887 (1969) - Published 13 October, 1969

Photoproduction of $K^{+} Λ$ and $K^{+} Σ^{0}$ from Hydrogen at Backward Angles

R. L. Anderson, D. Gustavson, J. Johnson, I. Overman, D. Ritson, and B. H. Wiik

Phys. Rev. Lett. 23, 890 (1969) - Published 13 October, 1969

$n + p \to d + γ$ and Time-Reversal Invariance

D. F. Bartlett, C. E. Friedberg, K. Goulianos, I. S. Hammerman, and D. P. Hutchinson

Phys. Rev. Lett. 23, 893 (1969) - Published 13 October, 1969

Connection Between $F_{π} (t)$ and the Amplitudes for $π π \to π π$ and $π π \to π A_{1}$

D. A. Geffen

Phys. Rev. Lett. 23, 897 (1969) - Published 13 October, 1969

Unstable Particles, Two-Body Inelastic Unitarity, and Veneziano's Model

N. F. Bali, Darryl D. Coon, and Jan W. Dash

Phys. Rev. Lett. 23, 900 (1969) - Published 13 October, 1969

Unitarization of the Veneziano Model, Pomeranchuk Singularity, and the Pion Mass

Kerson Huang

Phys. Rev. Lett. 23, 903 (1969) - Published 13 October, 1969

Physical Review Letters

Volume 23, Issue 15

LETTERS

Polarization of Channeled Particles

Stabilization of a Hot Electron Plasma by Homogeneous Temperature Effects

Approach to Equilibrium of Coupled, Harmonically Bound Oscillator Systems

Simple Proof and Generalization of Griffiths' Second Inequality

Liquid Structure Factor of ${He}^{4}$ by X-Ray Scattering at Small Momentum Transfer

Sign and Magnitude of the Exchange Interaction in Solid ${}^{3}{He}$ from Magnetic Susceptibility Measurements

Nuclear Magnetic Susceptibility of Solid ${He}^{3}$ Cooled by Compression from the Liquid Phase

Trapped-Particle Instability

Spectroscopic Study of Liquid Helium in the Vacuum Ultraviolet

Exciton-Phonon Interaction in Alkali Halides

Dynamic Measurement of Electron Energy Relaxation in InSb

Absorption of Oxygen in Silicon in the Far Infrared

Parametric Conversion of X Rays

Theory of Magnetically Assisted indirect Transitions in Magnetic Semiconductors

Additional Evidence for a Phase Transition in the Plane-Rotator and Classical Heisenberg Models for Two-Dimensional Lattices

Observation of the ${(g_{\frac{9}{2}})}^{2}$ Multiplet in ${Nb}^{90}$ via the ( ${He}^{3}$ , $t$ ) Reaction

High-Precision Measurement of the Total $n - p$ Scattering Cross Section in the Energy Range 0.7-32 MeV

Three-Fluid Hydrodynamical Model and the Proton Distribution in ${}^{208}{Pb}$

Isotopic-Shift Parameters in the Nilsson Model

Isospin Sum Rules in Nuclear Physics

Primary Cosmic-Ray Electron Energy Spectrum from 10 to 200 MeV Observed in Interplanetary Space

Proposed Experiment to Test Local Hidden-Variable Theories

$Ξ$ Resonances in $K^{-} p \to Ξ π K$ AT 2.87 GeV/c