Photoabsorption by Ultracold Atoms and the Scattering Length

1 May 1995

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 74 (18) , 3581-3584
https://doi.org/10.1103/physrevlett.74.3581

Abstract

It is shown that photoabsorption in a gas of ultracold atoms depends on the sign and magnitude of the scattering length in the scattering of a pair of atoms. Measurements of fluorescence in

^{7}

Li are interpreted to show that the triplet scattering length is negative and the singlet scattering length is positive.

Keywords

This publication has 15 references indexed in Scilit:

Spectroscopic Determination of the $s$ -Wave Scattering Length of Lithium
Physical Review Letters, 1995
Precise atomic radiative lifetime via photoassociative spectroscopy of ultracold lithium
Physical Review A, 1995
Study of ${Rb}_{2}$ Long-Range States by High-Resolution Photoassociation Spectroscopy
Physical Review Letters, 1994
Prospects for Bose-Einstein Condensation in Atomic ${}^{7}{Li}$ and ${}^{23}{Na}$
Physical Review Letters, 1994
Elastic scattering of two ${}^{7}{Li}$ atoms
Physical Review A, 1994
Atomic Bose gas with a negative scattering length
Physical Review A, 1994
Negative scattering length of ultracold ${}^{7}{Li}$ gas
Physical Review Letters, 1994
Photoassociation spectrum of ultracold Rb atoms
Physical Review Letters, 1993
Calculation of the scattering length in atomic collisions using the semiclassical approximation
Physical Review A, 1993
The absorption of radiation near 600 Å by helium
Molecular Physics, 1971