Volume 28, Issue 26

W. Bertozzi, T. Cooper, N. Ensslin, J. Heisenberg, S. Kowalski, M. Mills, W. Turchinetz, C. Williamson, S. P. Fivozinsky, J. W. Lightbody, Jr., and S. Penner

Phys. Rev. Lett. 28, 1711 (1972) - Published 26 June, 1972

Evidence for Shape or Quasimolecular Resonances in the ${}^{16}O$ + ${}^{16}O$ Interaction

P. P. Singh, D. A. Sink, P. Schwandt, R. E. Malmin, and R. H. Siemssen

Phys. Rev. Lett. 28, 1714 (1972) - Published 26 June, 1972

Mixing of Two-Proton Bands with Two-Neutron Bands in ${}^{176}{Hf}$

T. L. Khoo, J. C. Waddington, R. A. O'Neil, Z. Preibisz, D. G. Burke, and M. W. Johns

Phys. Rev. Lett. 28, 1717 (1972) - Published 26 June, 1972

Generator-Coordinate Form Factors for Transfer Reactions between Heavy Ions

P. Bonche and B. Giraud

Phys. Rev. Lett. 28, 1720 (1972) - Published 26 June, 1972

Missing Low-Lying States in ${}^{39}K$

J. L. Durell, V. Metag, R. Repnow, A. N. James, J. F. Sharpey-Schafer, and P. von Brentano

Phys. Rev. Lett. 28, 1723 (1972) - Published 26 June, 1972

Single-Particle Effects on Fission Probabilities for the Lighter Elements

R. Vandenbosch and U. Mosel

Phys. Rev. Lett. 28, 1726 (1972) - Published 26 June, 1972

Charge-Dependent Effects in the Photodisintegration of ${}^{4}{He}$

J. T. Londergan and C. M. Shakin

Phys. Rev. Lett. 28, 1729 (1972) - Published 26 June, 1972

Elementary Particles and Fields

Measurement of Neutral-Meson Production in $π^{-} p + π^{-} p X^{0}$ at 13.4 GeV/c

R. Thun, H. R. Blieden, G. Finocchiaro, J. Kirz, C. Nef, D. Bowen, D. Earles, W. Faissler, D. Garelick, M. Gettner, M. Glaubman, B. Gottschalk, G. Lutz, J. Moromisato, E. I. Shibata, Y. W. Tang, and E. von Goeler

Phys. Rev. Lett. 28, 1733 (1972) - Published 26 June, 1972

${K_{2}}^{0} \to γ γ$ Decay in a Current-Current Quark Model

R. Rockmore and T. F. Wong

Phys. Rev. Lett. 28, 1736 (1972) - Published 26 June, 1972

Evidence for Stray Baryonic States from a Study of $K^{+} Λ$ Photoproduction

S. R. Deans, D. T. Jacobs, P. W. Lyons, and D. L. Montgomery

Phys. Rev. Lett. 28, 1739 (1972) - Published 26 June, 1972

Physical Review Letters

Volume 28, Issue 26

LETTERS

Plasmas, Fluids, Thermodynamics, and Related Topics

Dynamics of the Orientation of a Nematic-Liquid-Crystal Film in a Variable Magnetic Field

Solid Surface Shape and the Alignment of an Adjacent Nematic Liquid Crystal

Enhanced Scattering Inherent to "Loss-Cone" Particle Distributions

Collective Modes in Streams of Charged Vortex Rings

Growing Collective Modes in Vortex Ring Beams in He II

Possible Second-Order Nematic—Smectic- $A$ Phase Transition

Direct Observation of the Orientational Kerr Effect in the Self-Focusing of Picosecond Pulses

Solids

Photon Generation by Joule Heating in Metal Films

Ultrasonic Study of the Exchange Transition in the Uniaxial Antiferromagnet GdAl $O_{3}$

Nuclei

Subbarrier Fission Resonances in Th Isotopes

Deformation Parameters of ${}^{152}{Sm}$ by Electron Scattering