Production efficiency of ultracold Feshbach molecules in bosonic and fermionic systems

被引：112
作者：
Hodby, E [1 ]
Thompson, ST
Regal, CA
Greiner, M
Wilson, AC
Jin, DS
Cornell, EA
Wieman, CE
机构：
[1] Natl Inst Stand & Technol, Joint Inst Lab Astrophys, Boulder, CO 80309 USA
[2] Univ Colorado, Boulder, CO 80309 USA
[3] Univ Otago, Dept Phys, Dunedin, New Zealand
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 12期
关键词：
D O I：
10.1103/PhysRevLett.94.120402
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the production efficiency of ultracold molecules in bosonic Rb-85 and fermionic K-40 when the magnetic field is swept across a Feshbach resonance. For adiabatic sweeps of the magnetic field, our novel model shows that the conversion efficiency of both species is solely determined by the phase space density of the atomic cloud, in contrast with a number of theoretical predictions. In the nonadiabatic regime our measurements of the Rb-85 molecule conversion efficiency follow a Landau-Zener model.
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页数：4
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