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Search Publications by: Paul S. Julienne (Assoc)

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Displaying 126 - 150 of 213

Determination of the Scattering Lengths of 39 K from 1 u Photoassociation Lineshapes

December 1, 1999
Author(s)
Carl J. Williams, Eite Tiesinga, Paul S. Julienne, H Wang, W C. Stwalley, P L. Gould
We report threshold scattering properties for 39K(f = 1) atoms obtained from analysis of experimental photoassociation spectra of the purely long-range 39K 21 u state. The existence of hyperfine structure in the excited K 2 1 u state and a knowledge of the

Measurement of the Coherence of a Bose-Einstein Condensate

October 1, 1999
Author(s)
Edward W. Hagley, Lu Deng, M M. Kozuma, M Trippenbach, Y B. Band, M Edwards, M R. Doery, Paul S. Julienne, Kristian Helmerson, S L. Rolston, William D. Phillips
We study the coherence properties of a Bose-Einstein condensates using an interference technique. Two 100 ns optical standing wave pulses are applied to a condensate with a variable time delay between them. Each standing wave phase grating makes small

Atom Loss From Bose-Einstein Condensates Due to Feshbach Resonance

August 1, 1999
Author(s)
V Yurovsky, A Ben-Reuven, Paul S. Julienne, Carl J. Williams
In recent experiments on Na Bose-Einstein condensates [S. Inouye et al., Nature 392, 151 (1998); J. Stenger et al., Phys. Rev. Lett. 82, 2422 (1999)], large loss rates were observed when a time-varying magnetic field was used to tune a molecular Feshbach

Collisions of Cold Magnesium Atoms in a Weak Laser Field

June 1, 1999
Author(s)
M Machholm, Paul S. Julienne, K A. Suominen
We calculate the laser-induced collisional loss of laser-cooled and trapped magnesium atoms for detunings up to 30 atomic linewidths to the red of 1S O -> 1P 1 cooling transition. Magnesium is an excellent test case for theoretical studies, because it can

Four-Wave Mixing With Matter Waves

March 1, 1999
Author(s)
Lu Deng, Edward W. Hagley, J Wen, M Trippenbach, Y B. Band, Paul S. Julienne, J E. Simsarian, Kristian Helmerson, S L. Rolston, William D. Phillips
The advent of the laser as an intense, coherent light source gave birth to nonlinear optics, which now plays an important role in many areas of science and technology. One of the first applications of nonlinear optics was the production of coherent light

Experiments and Theory in Cold and Ultracold Collisions

January 1, 1999
Author(s)
J Weiner, V S. Bagnato, S Zilio, Paul S. Julienne
The authors review progress in understanding the nature of atomic collisions occurring at temperatures ranging from the millidegrees Kelvin to the nanodegrees Kelvin regime. The review includes advances in experiments with atom beams, light traps, and

Elastic and Inelastic Collisions of Cold Spin-Polarized 133 Cs Atoms

August 17, 1998
Author(s)
P J. Leo, Eite Tiesinga, Paul S. Julienne, T G. Walker
We present theoretical calculations of thermally averaged elastic cross sections and spin relaxation rates in the temperature range 1 {micro}K to 300 {micro}K for magnetically trapped doubly polarized Cesium atoms. The calculations reproduce the recent

Elastic and Inelastic Collisions of Cold Spin-Polarized 133 Cs Atoms

August 1, 1998
Author(s)
P J. Leo, Eite Tiesinga, Paul S. Julienne, D K. Walter, S Kadlecek, T G. Walker
We present theoretical calculations of thermally averaged elastic cross sections and spin-relaxation rate coefficients in the temperature range 0.1 to 300 K for Magnetically trapped doubly polarized cesium atoms. The calculations reproduce the recent