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Physical Review Letters

Volume 54, Issue 7

18 February 1985

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LETTERS

General Physics

Collisions in the Classical Limit: The Vanishing-Potential Theorem

Tsofar Maniv and Morrel H. Cohen

Phys. Rev. Lett. 54, 611 (1985) - Published 18 February, 1985

Invariants Polynomial in Momenta for Integrable Hamiltonians

Laurence S. Hall

Phys. Rev. Lett. 54, 614 (1985) - Published 18 February, 1985

Accelerated Diffusion in Josephson Junctions and Related Chaotic Systems

T. Geisel, J. Nierwetberg, and A. Zacherl

Phys. Rev. Lett. 54, 616 (1985) - Published 18 February, 1985

Critical Dimension of String Theories in Curved Space

Dennis Nemeschansky and Shimon Yankielowicz

Phys. Rev. Lett. 54, 620 (1985) - Published 18 February, 1985

Elementary Particles and Fields

Upper Bound on the $τ$ -Neutrino Mass from the Previously Unobserved Decay Mode $τ \to KK π ν_{τ}$

G. B. Mills et al.

Phys. Rev. Lett. 54, 624 (1985) - Published 18 February, 1985

Inclusive Production of $Ω^{-}$ and ${\bar{Ω}}^{+}$ by $K_{L}^{0}$ -Carbon Interactions in the Energy Range 80-280 GeV/c

E. P. Hartouni, M. S. Atiya, S. D. Holmes, B. C. Knapp, W. Lee, R. Seto, W. Wisniewski, P. Avery, J. Butler, G. Gladding, M. C. Goodman, M. Lamm, T. O'Halloran, J. J. Russell, A. Wattenberg, J. Wiss, M. Binkley, J. P. Cumalat, I. Gaines, M. Gormley, R. Loveless, and J. Peoples

Phys. Rev. Lett. 54, 628 (1985) - Published 18 February, 1985

Relation between the Spin and the Size of a Skyrmion

A. J. Niemi

Phys. Rev. Lett. 54, 631 (1985) - Published 18 February, 1985

Nuclei

Inclusive Pion Double Charge Exchange in ${}^{16}O$ and ${}^{40}{Ca}$

S. A. Wood, J. L. Matthews, G. A. Rebka, Jr., P. A. M. Gram, H. J. Ziock, and D. A. Clark

Phys. Rev. Lett. 54, 635 (1985) - Published 18 February, 1985

Possible Solution to the Entropy Puzzle in Heavy-Ion Collisions

Lászlo P. Csernai

Phys. Rev. Lett. 54, 639 (1985) - Published 18 February, 1985

Boson Densities in the Germanium Isotopes and Inelastic Electron Scattering

J. -P. Bazantay, J. -M. Cavedon, J. -C. Clemens, B. Frois, D. Goutte, M. Huet, P. Leconte, Y. Mizuno, X. -H. Phan, S. K. Platchkov, W. Boeglin, and I. Sick

Phys. Rev. Lett. 54, 643 (1985) - Published 18 February, 1985

Role of Meson-Exchange Currents in the Charge Form Factor of ${}^{6}{Li}$

M. A. K. Lodhi and Robert B. Hamilton

Phys. Rev. Lett. 54, 646 (1985) - Published 18 February, 1985

Magnetic Form Factor of the Deuteron

S. Auffret, J. M. Cavedon, J. C. Clemens, B. Frois, D. Goutte, M. Huet, Ph. Leconte, J. Martino, Y. Mizuno, X. -H. Phan, S. Platchkov, and I. Sick

Phys. Rev. Lett. 54, 649 (1985) - Published 18 February, 1985

Extension of Supersymmetry in Nuclear Structure

P. Van Isacker, J. Jolie, K. Heyde, and A. Frank

Phys. Rev. Lett. 54, 653 (1985) - Published 18 February, 1985

Atoms and Molecules

Direct Observation of Electronic Intramolecular Energy Transfer through a Large Energy Gap

Daniel H. Katayama

Phys. Rev. Lett. 54, 657 (1985) - Published 18 February, 1985

Modified Generalized Valence-Bond Method: A Simple Correction for the Electron Correlation Missing in Generalized Valence-Bond Wave Functions; Prediction of Double-Well States for ${Cr}_{2}$ and ${Mo}_{2}$

Marvin M. Goodgame and William A. Goddard, III

Phys. Rev. Lett. 54, 661 (1985) - Published 18 February, 1985

Application of New Lower-Bound Techniques to the Spectra of Li and ${Li}^{+}$

David M. Russell and W. M. Greenlee

Phys. Rev. Lett. 54, 665 (1985) - Published 18 February, 1985

Numerical Solution of the Time-Dependent Dirac Equation with Application to Positron Production in Heavy-Ion Collisions

C. Bottcher and M. R. Strayer

Phys. Rev. Lett. 54, 669 (1985) - Published 18 February, 1985

Classical Phenomenology and Applications

Tricritical Phenomena in Rotating Couette-Taylor Flow

Anneli Aitta, Guenter Ahlers, and David S. Cannell

Phys. Rev. Lett. 54, 673 (1985) - Published 18 February, 1985

Coherent Ringing in Superfluorescence

D. J. Heinzen, J. E. Thomas, and M. S. Feld

Phys. Rev. Lett. 54, 677 (1985) - Published 18 February, 1985

New Class of Instabilities in Passive Optical Cavities

D. W. McLaughlin, J. V. Moloney, and A. C. Newell

Phys. Rev. Lett. 54, 681 (1985) - Published 18 February, 1985

Electron-Beam Guiding and Phase-Mix Damping by a Laser-Ionized Channel

W. E. Martin, G. J. Caporaso, W. M. Fawley, D. Prosnitz, and A. G. Cole

Phys. Rev. Lett. 54, 685 (1985) - Published 18 February, 1985

Fluids, Plasmas, and Electric Discharges

Multichannel Scattering Studies of the Spectra and Spatial Distribution of Tokamak Microturbulence

D. L. Brower, W. A. Peebles, N. C. Luhmann, Jr., and R. L. Savage, Jr.

Phys. Rev. Lett. 54, 689 (1985) - Published 18 February, 1985

Acceleration of Electrons by the Interaction of a Bunched Electron Beam with a Plasma

Pisin Chen, J. M. Dawson, Robert W. Huff, and T. Katsouleas

Phys. Rev. Lett. 54, 693 (1985) - Published 18 February, 1985

Effect of Nonlinear Collective Processes on the Confinement of a Pure-Electron Plasma

J. D. Crawford, T. M. O'Neil, and J. H. Malmberg

Phys. Rev. Lett. 54, 697 (1985) - Published 18 February, 1985

Condensed Matter: Structure, Etc.

Fractal Aggregates in Sputter-Deposited Nb ${Ge}_{2}$ Films

W. T. Elam, S. A. Wolf, J. Sprague, D. U. Gubser, D. Van Vechten, G. L. Barz, Jr., and Paul Meakin

Phys. Rev. Lett. 54, 701 (1985) - Published 18 February, 1985

Inelastic Neutron Scattering in Epoxy Resins: The Phonon-Fracton Density of States and the Specific Heat

H. M. Rosenberg

Phys. Rev. Lett. 54, 704 (1985) - Published 18 February, 1985

Wetting Layers and Dispersion Forces for a Fluid in Contact with a Vertical Wall

R. F. Kayser, J. W. Schmidt, and M. R. Moldover

Phys. Rev. Lett. 54, 707 (1985) - Published 18 February, 1985

Adsorption-Site Location by Transmission Channeling: Deuterium on Ni(100)

I. Stensgaard and F. Jakobsen

Phys. Rev. Lett. 54, 711 (1985) - Published 18 February, 1985

Condensed Matter: Electronic Properties, Etc.

Post-Collision Interactions in $M_{2, 3}$ -Shell Energy-Loss, Autoionization, and Auger Spectra of Cr and Fe by Electron Impact near Threshold

Y. Sakisaka, T. Miyano, and M. Onchi

Phys. Rev. Lett. 54, 714 (1985) - Published 18 February, 1985

New Interpretation of Spin-Wave Behavior in Nickel

J. F. Cooke, J. A. Blackman, and T. Morgan

Phys. Rev. Lett. 54, 718 (1985) - Published 18 February, 1985

Lifetime of an Electron-Hole Plasma of Silicon in the Picosecond Range

Mark Rasolt and H. Kurz

Phys. Rev. Lett. 54, 722 (1985) - Published 18 February, 1985

Cross-Disciplinary Physics

Quantum Noise and the Threshold of Hearing

William Bialek and Allan Schweitzer

Phys. Rev. Lett. 54, 725 (1985) - Published 18 February, 1985