Formation of molecules from a Cs Bose-Einstein condensate

V. A. Yurovsky*, A. Ben-Reuven

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Conversion of an expanding Bose-Einstein condensate of Cs atoms to a molecular one with an efficiency of more than 30% was observed recently in experiments by M. Mark [Europhys. Lett. 69, 706 (2005)]. The theory presented here describes the experimental results. Values of resonance strength of 8 mG and rate coefficients for atom-molecule deactivation of 1Ã- 10â 11cm3â •s and molecule-molecule one of 1.5Ã- 10â 9cm3â •s are estimated by a fit of the theoretical results to the experimental data. Near the resonance, where the highest conversion efficiency was observed, the results demonstrate strong sensitivity to the magnetic field ripple and inhomogeneity. A conversion efficiency of about 60% is predicted by non-mean-field calculations for densities and sweep rates lower than the ones used in the experiments.

Original languageEnglish
Article number053618
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number5
StatePublished - Nov 2005


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