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APS » Journals » Phys. Rev. Lett. » Volume 92 » Issue 8
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Phys. Rev. Lett. 92, 083201 (2004) [4 pages]

Lifetime of Molecule-Atom Mixtures near a Feshbach Resonance in 40K

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C. A. Regal, M. Greiner, and D. S. Jin*
JILA, National Institute of Standards and Technology and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440

Received 28 August 2003; published 27 February 2004

We report a dramatic magnetic-field dependence in the lifetime of trapped, ultracold diatomic molecules created through an s-wave Feshbach resonance between fermionic atoms. 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.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.083201
DOI:
10.1103/PhysRevLett.92.083201
PACS:
34.50.–s

*Quantum Physics Division, National Institute of Standards and Technology.

 
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