Phys. Rev. Lett. 91, 210402 (2003) [4 pages]Formation of Quantum-Degenerate Sodium MoleculesReceived 1 October 2003; published 21 November 2003 Ultracold sodium molecules were produced from an atomic Bose-Einstein condensate by ramping an applied magnetic field across a Feshbach resonance. More than 105 molecules were generated with a conversion efficiency of ∼4%. Using laser light resonant with an atomic transition, the remaining atoms could be selectively removed, preventing fast collisional relaxation of the molecules. Time-of-flight analysis of the pure molecular sample yielded an instantaneous phase-space density greater than 20. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.210402
DOI:
10.1103/PhysRevLett.91.210402
PACS:
03.75.Nt, 32.80.Pj, 33.80.Ps, 34.20.Cf
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