Sympathetic cooling of bosonic and fermionic Lithium gases towards quantum degeneracy
F. Schreck, G. Ferrari, K. L. Corwin, J. Cubizolles, L. Khaykovich, M. -O. Mewes, C. Salomon
Abstract
Sympathetic cooling of two atomic isotopes is experimentally investigated. Using forced evaporation of a bosonic 7Li gas in a magnetic trap, a sample of 3 105 6Li fermions has been sympathetically cooled to 9(3)muK, corresponding to 2.2(0.8) times the Fermi temperature. The measured rate constant for 2-body inelastic collisions of 7Li |2,2> state at low magnetic field is 1.0+0.8-0.5 10-14 cm3s-1.
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