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Lifetime of molecule-atom mixtures near a Feshbach resonance in 40K

C. A. Regal·M. Greiner·D. S. Jin
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Abstract

We report a dramatic magnetic field dependence in the lifetime of trapped, ultracold diatomic molecules created through an s-wave Feshbach resonance in 40K. The molecule lifetime increases from less than 1 ms away from the Feshbach resonance to greater than 100 ms near resonance. We also have measured the trapped atom lifetime as a function of magnetic field near the Feshbach resonance; we find that the atom loss is more pronounced on the side of the resonance containing the molecular bound state.

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C. A. Regal, M. Greiner, D. S. Jin. 2003-08-29. Lifetime of molecule-atom mixtures near a Feshbach resonance in 40K. https://doi.org/10.1103/physrevlett.92.083201

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