Volume 26, Issue 24

V. Kistiakowsky, F. A. Triantis, R. K. Yamamoto, R. D. Klem, P. Marcato, I. A. Pless, I. Spirn, E. F. Anelli, C. N. DeMarzo, A. Romano, D. G. Crabb, A. C. Meyers, III, and J. R. O'Fallon

Phys. Rev. Lett. 26, 1498 (1971) - Published 14 June, 1971

Off-Mass-Shell $K π$ Scattering Phase Shifts

H. Yuta, M. Derrick, R. Engelmann, B. Musgrave, F. Schweingruber, B. Forman, N. Gelfand, and H. Schulz

Phys. Rev. Lett. 26, 1502 (1971) - Published 14 June, 1971

Evidence for Splitting in the $Q$ Region of $K^{+} π^{+} π^{-}$ Mass

A. F. Garfinkel, R. F. Holland, D. D. Carmony, H. W. Clopp, D. Cords, F. J. Loeffler, L. K. Rangan, R. L. Lander, D. E. Pellett, and P. M. Yager

Phys. Rev. Lett. 26, 1505 (1971) - Published 14 June, 1971

Model for the Production of Particles with Superstrong Interactions: Estimates of Lower Bounds on the Quark and Monopole Masses

J. L. Newmeyer and J. S. Trefil

Phys. Rev. Lett. 26, 1509 (1971) - Published 14 June, 1971

Anomalous Behavior of $γ γ \to n π^{0}$ in Effective Lagrangians

Ernest S. Abers and Stephen Fels

Phys. Rev. Lett. 26, 1512 (1971) - Published 14 June, 1971

A Model for Pomeranchukon Couplings

R. Carlitz, M. B. Green, and A. Zee

Phys. Rev. Lett. 26, 1515 (1971) - Published 14 June, 1971

ERRATA

Evidence of Metastable Atomic and Molecular Bubble States in Electron-Bombarded Superfluid Liquid Helium

J. C. Hill, O. Heybey, and G. K. Walters

Phys. Rev. Lett. 26, 1519 (1971) - Published 14 June, 1971

$d$ -Band Difficulties in the $\vec{k} \cdot \vec{p}$ Method

T. J. Kuebbing, K. Schwarz, S. B. Trickey, and J. B. Conklin, Jr.

Phys. Rev. Lett. 26, 1519 (1971) - Published 14 June, 1971

Physical Review Letters

Volume 26, Issue 24

LETTERS

Atoms, Molecules, and Related Topics

Eigenstates of Optical Potentials for Exotic Atoms

Plasmas, Fluids, Thermodynamics, and Related Topics

Temperature Dependence of Critical Opalescence in Carbon Dioxide

Thermodynamics of Fermions in One Dimension with a $δ$ -Function Interaction

Solids

Strain-Induced Inhomogeneity of the Surface Potential on Freshly Cleaved Semiconductor Surfaces

Angular Distribution of Photoelectrons Emitted from Copper Single Crystals

Critical Magnetic Neutron Scattering from CoO

Tetragonal Elongation in CoO Near the Néel Point

Correlation Between Magnetization and Field-Dependent Specific-Heat Data Near the Curie Point

Nuclei

Determination of the $Y_{40}$ Components in the Equilibrium Nuclear Shapes of ${}^{232}{Th}$ and ${}^{238}U$

Evidence for the Existence of a Narrow $\bar{p} n$ Bound State

${A_{2}}^{+}$ Mass Spectrum in $π^{+} p$ Interactions at $3.7 \frac{GeV}{c}$

Momentum Dependence of the 180° $π^{-} p$ Charge-Exchange Cross Section