Phys. Rev. Lett. 82, 2422–2425 (1999)Strongly Enhanced Inelastic Collisions in a Bose-Einstein Condensate near Feshbach ResonancesReceived 24 September 1998; published in the issue dated 22 March 1999 The properties of Bose-Einstein condensed gases can be strongly altered by tuning the external magnetic field near a Feshbach resonance. Feshbach resonances affect elastic collisions and lead to the observed modification of the scattering length. However, as we report here, the observed rate of inelastic collisions was strongly enhanced in a sodium Bose-Einstein condensate when the scattering length was tuned to both larger or smaller values than the off-resonant value. These strong losses impose severe limitations for using Feshbach resonances to tune the properties of Bose-Einstein condensates. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.2422
DOI:
10.1103/PhysRevLett.82.2422
PACS:
03.75.Fi, 05.30.-d, 32.80.Pj, 65.50.+m
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