Evaporative Cooling of a Two-Component Degenerate Fermi Gas
M J. Holland, B. L. DeMarco, Deborah S. Jin
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 fo the particles. The cooling efficiency is reduced at low temperatures due to Pauli blocking of a 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.
Physical Review A (Atomic, Molecular and Optical Physics)
atom trapping and cooling, evaporative cooling, Fermi gas
, DeMarco, B.
and Jin, D.
Evaporative Cooling of a Two-Component Degenerate Fermi Gas, Physical Review A (Atomic, Molecular and Optical Physics)
(Accessed December 9, 2023)