Phys. Rev. A 61, 053610 (2000) [6 pages]Evaporative cooling of a two-component degenerate Fermi gasReceived 25 October 1999; published 18 April 2000 We derive a quantum theory of evaporative cooling for a degenerate Fermi gas with two constituents and show that the optimum cooling trajectory is influenced significantly by the quantum statistics of the particles. The cooling efficiency is reduced at low temperatures due to Pauli blocking of available final states in each binary collision event. We compare the theoretical optimum trajectory with experimental data on cooling a quantum degenerate cloud of potassium-40, and show that temperatures as low as 0.3 times the Fermi temperature can now be achieved. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.61.053610
DOI:
10.1103/PhysRevA.61.053610
PACS:
03.75.Fi, 05.30.Fk, 05.20.Dd, 67.40.Fd
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