Sympathetic cooling of bosonic and fermionic lithium gases towards quantum degeneracy
Sympathetic cooling of bosonic and fermionic lithium gases towards quantum degeneracy
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玻色子和费米子锂气体向量子简并的交感冷却
DOI：
10.1103/physreva.64.011402
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发表时间：
2001
影响因子：
2.9
通讯作者：
C. Salomon
中科院分区：
文献类型：
--
作者：
F. Schreck;G. Ferrari;K. Corwin;J. Cubizolles;L. Khaykovich;M. Mewes;C. Salomon
实验研究了双原子同位素的交感冷却。利用玻色子7 Li气体在磁阱中的强制蒸发，一个含有3 × 10^5个6Li费米子的样品被共振冷却到9（3）μ K，相当于费米温度的2.2（0.8）倍。~ 7 Li两体非弹性碰撞速率常数的测量|2，2>态在低磁场下的电子密度为1.0^{+0.8}_{-0.5} 10^-14 cm ^3 s ^-1。
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.