Sensitive detection of cold cesium molecules formed on Feshbach resonances

被引：69

作者：

Chin, C ^{[1
]}

Kerman, AJ ^{[1
]}

Vuletic, V ^{[1
]}

Chu, S ^{[1
]}

机构：

[1] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.90.033201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We observe the dynamic formation of quasibound Cs-2 molecules near Feshbach resonances in a cold sample of atomic cesium. Using an external probe beam, more than 15 weakly coupled molecular states are detected with high sensitivity, whose collisional formation cross sections are as small as sigma = 2 x 10(-16) cm(2). By modeling the molecule formation and dissociation processes with rate equations, we conclude that at an atomic density of 10(13) cm(-3) and temperature of 5 muK, more than 5(1) x 10(5) Cs-2 molecules in a single rovibrational state coexist with 10(8) Cs atoms in our trap.

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