Phys. Rev. A 69, 012709 (2004) [8 pages]Cold collisions between boson or fermion moleculesReceived 11 September 2003; published 21 January 2004 We theoretically investigate collisions between electrostatically trapped cold polar molecules and compare boson and fermion isotopes. Evaporative cooling seems possible for fermion molecules as the ratio of the collision loss cross section to the elastic collision cross section (R) gets smaller as the molecular temperature T lowers. With boson molecules, R gets larger as T lowers, which makes evaporative cooling difficult. The elastic collision cross section between fermion molecules can be larger than that for boson molecules with certain conditions. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.69.012709
DOI:
10.1103/PhysRevA.69.012709
PACS:
34.50.Ez
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