Dissociation and decay of ultracold sodium molecules

被引：116

作者：

Mukaiyama, T

Abo-Shaeer, JR

Xu, K

Chin, JK

Ketterle, W

机构：

[1] MIT, MIT Harvard Ctr Ultracold Atoms, Dept Phys, Cambridge, MA 02139 USA

[2] MIT, Elect Res Lab, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 18期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

D O I：

10.1103/PhysRevLett.92.180402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dissociation of ultracold molecules was studied by ramping an external magnetic field through a Feshbach resonance. The observed dissociation energies directly yielded the strength of the atom-molecule coupling. They showed nonlinear dependence on the ramp speed. This was explained by a Wigner threshold law which predicts that the decay rate of the molecules above threshold increases with the density of states. In addition, inelastic molecule-molecule and molecule-atom collisions were characterized.

引用

收藏

页码：180402 / 1

页数：4

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