Phys. Rev. Lett. 91, 240401 (2003) [4 pages]Production of Long-Lived Ultracold Li2 Molecules from a Fermi GasReceived 1 August 2003; published 8 December 2003 We create weakly bound Li2 molecules from a degenerate two component Fermi gas by sweeping a magnetic field across a Feshbach resonance. The atom-molecule transfer efficiency can reach 85% and is studied as a function of magnetic field and initial temperature. The bosonic molecules remain trapped for 0.5 s and their temperature is within a factor of 2 from the Bose-Einstein condensation temperature. A thermodynamical model reproduces qualitatively the experimental findings. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.240401
DOI:
10.1103/PhysRevLett.91.240401
PACS:
03.75.Ss, 05.30.Fk, 32.80.Pj, 34.50.–s
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