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

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 05期

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

页码：943 / 946

页数：4

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