We have converted an ultracold Fermi gas of 6Li atoms into an ultracold gas of 6Li2 molecules by adiabatic passage through a Feshbach resonance. Approximately 1.5×105 molecules in the least-bound, v=38, vibrational level of the X1Σg+ singlet state are produced with an efficiency of 50%. The molecules remain confined in an optical trap for times of up to 1 s before we dissociate them by a reverse adiabatic sweep.
@article{arxiv.cond-mat/0308318,
title = {Conversion of an Atomic Fermi Gas to a Long-Lived Molecular Bose Gas},
author = {Kevin E. Strecker and Guthrie B. Partridge and Randall G. Hulet},
journal= {arXiv preprint arXiv:cond-mat/0308318},
year = {2009}
}