Sympathetic cooling of bosonic and fermionic Lithium gases towards quantum degeneracy

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 10^5 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 cm^3s^-1.

4 pages, 4 figures

References in corpus (9)

• Superfluidity of spin-polarized 6Li
• Zero-temperature phase diagram of binary boson-fermion mixtures
• Observation of p-wave Threshold Law Using Evaporatively Cooled Fermionic Atoms
• Simultaneous Magneto-Optical Trapping of Two Lithium Isotopes
• Exploring a quantum degenerate gas of fermionic atoms
• Trapped ${}^6$Li : A high T_c superfluid ?
• Collisional relaxation in a fermionic gas
• Sympathetic cooling of an atomic Bose-Fermi gas mixture
• Cooper pair formation in trapped atomic Fermi gases

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• Critical numbers of attractive Bose-condensed atoms in asymmetric traps
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• Two-component few-fermion mixtures in a one-dimensional trap: numerical versus analytical approach
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• Feshbach-Stimulated Photoproduction of a Stable Molecular Condensate
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• Pairing of fermions in atomic traps and nuclei
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• Doppler cooling of an optically dense cloud of trapped atoms
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• Solitons of Bose-Fermi mixtures in a strongly elongated trap
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