Volume 62, Issue 20

K. Danzmann, W. E. Meyerhof, E. C. Montenegro, E. Dillard, H. P. Hülskötter, N. Guardala, D. W. Spooner, B. Kotlinski, D. Cline, A. Kavka, C. W. Beausang, J. Burde, M. A. Deleplanque, R. M. Diamond, R. J. McDonald, A. O. Macchiavelli, B. S. Rude, F. S. Stephens, and J. D. Molitoris

Phys. Rev. Lett. 62, 2353 (1989) - Published 15 May, 1989

Relativistic pion-ring series for nuclear matter

Hong Jung, Friedrich Beck, and Gerald A. Miller

Phys. Rev. Lett. 62, 2357 (1989) - Published 15 May, 1989

Atomic, Molecular, and Optical Physics

Trapping of neutral atoms with resonant microwave radiation

Charles C. Agosta, Isaac F. Silvera, H. T. C. Stoof, and B. J. Verhaar

Phys. Rev. Lett. 62, 2361 (1989) - Published 15 May, 1989

Observation of an electronic correlation for double-Rydberg states of barium

P. Camus, T. F. Gallagher, J.-M. Lecomte, P. Pillet, L. Pruvost, and J. Boulmer

Phys. Rev. Lett. 62, 2365 (1989) - Published 15 May, 1989

Polarization effects in the ionization cross section for collisions of ${Ne}^{/ e m p h >}$ {(2p $)^{5}$ (3p);J=3} with Ar: A sensitive probe for ‘‘locking’’ phenomena

J. P. J. Driessen, F. J. M. van de Weijer, M. J. Zonneveld, L. M. T. Somers, M. F. M. Janssens, H. C. W. Beijerinck, and B. J. Verhaar

Phys. Rev. Lett. 62, 2369 (1989) - Published 15 May, 1989

Double excitation of helium by fast electrons, protons, and $C^{(4 - 6) +}$ ions

J. O. P. Pedersen and P. Hvelplund

Phys. Rev. Lett. 62, 2373 (1989) - Published 15 May, 1989

Ultimate quantum limits on phase measurement

Jeffrey H. Shapiro, Scott R. Shepard, and Ngai C. Wong

Phys. Rev. Lett. 62, 2377 (1989) - Published 15 May, 1989

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

First observation of beamstrahlung

G. Bonvicini, E. Gero, R. Frey, W. Koska, C. Field, N. Phinney, and A. Minten

Phys. Rev. Lett. 62, 2381 (1989) - Published 15 May, 1989

Structure determination from intensity measurements in scattering experiments

Anthony J. Devaney

Phys. Rev. Lett. 62, 2385 (1989) - Published 15 May, 1989

Plasma and Beam Physics

Demonstration of efficiency enhancement in a high-power backward-wave oscillator by plasma injection

Y. Carmel, K. Minami, R. A. Kehs, W. W. Destler, V. L. Granatstein, D. Abe, and W. L. Lou

Phys. Rev. Lett. 62, 2389 (1989) - Published 15 May, 1989

Information content of transient synchrotron radiation in tokamak plasmas

N. J. Fisch and A. H. Kritz

Phys. Rev. Lett. 62, 2393 (1989) - Published 15 May, 1989

Fluid hydrogen at high density: The plasma phase transition

D. Saumon and G. Chabrier

Phys. Rev. Lett. 62, 2397 (1989) - Published 15 May, 1989

Condensed Matter: Structure, Etc.

Free-expansion melting of a colloidal monolayer

Yeke Tang, A. J. Armstrong, R. C. Mockler, and W. J. O’Sullivan

Phys. Rev. Lett. 62, 2401 (1989) - Published 15 May, 1989

Nuclear antiferromagnetism in a registered ${}^{3}{He}$ solid

Veit Elser

Phys. Rev. Lett. 62, 2405 (1989) - Published 15 May, 1989

Al-Cu-Ru: An icosahedral alloy without phason disorder

C. A. Guryan, A. I. Goldman, P. W. Stephens, K. Hiraga, A. P. Tsai, A. Inoue, and T. Masumoto

Phys. Rev. Lett. 62, 2409 (1989) - Published 15 May, 1989

Condensed Matter: Electronic Properties, Etc.

Positron reflection from the surface potential

D. T. Britton, P. A. Huttunen, J. Mäkinen, E. Soininen, and A. Vehanen

Phys. Rev. Lett. 62, 2413 (1989) - Published 15 May, 1989

Transport properties and a current-functional theory in the linear-response regime

Tai Kai Ng

Phys. Rev. Lett. 62, 2417 (1989) - Published 15 May, 1989

COMMENTS

Skipping motion in small-angle ion-surface scattering

Brian W. Dodson

Phys. Rev. Lett. 62, 2421 (1989) - Published 15 May, 1989

Snowdon replies

K. J. Snowdon

Phys. Rev. Lett. 62, 2422 (1989) - Published 15 May, 1989

Comment on ‘‘Electronic structure of localized Si dangling-bond defects by tunneling spectroscopy’’

J. E. Müller, W. Daum, and H. Ibach

Phys. Rev. Lett. 62, 2423 (1989) - Published 15 May, 1989

Hamers and Demuth reply

Robert Hamers and J. E. Demuth

Phys. Rev. Lett. 62, 2424 (1989) - Published 15 May, 1989