Suppression of atomic radiative collisions by tuning the ground state scattering length

被引:43
|
作者
Vuletic, V [1 ]
Chin, C [1 ]
Kerman, AJ [1 ]
Chu, S [1 ]
机构
[1] Stanford Univ, Dept Phys, Stanford, CA 94305 USA
关键词
D O I
10.1103/PhysRevLett.83.943
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We investigate the radiative collision rate in an ultracold, optically trapped cesium gas near a magnetically tunable Feshbach resonance. The radiative trap loss is suppressed by a factor of up to 15 when the node of the ground state pair correlation function is tuned to the Condon point. This constitutes a direct measurement of both the sign and the magnitude of the a-wave scattering length. In addition, we observe several narrow, superimposed loss resonances. Their widths are determined by the gas temperature, and their positions are independent of external parameters to within 5 mG.
引用
收藏
页码:943 / 946
页数:4
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