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Strongly Enhanced Inelastic Collisions in a Bose-Einstein Condensate near Feshbach Resonances
Physical Review Letters
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, this is accompanied by a strong increase in the rate of inelastic collisions. The observed three-body loss rate in a sodium Bose-Einstein condensation increased when the scattering length was tuned to both larger or smallerdoi:10.1103/physrevlett.82.2422 fatcat:4mv2cxv2qrat7f2th6a3uoyla4