Atom-molecule collisions in an optically trapped gas

被引：103

作者：

Zahzam, N ^{[1
]}

Vogt, T ^{[1
]}

Mudrich, M ^{[1
]}

Comparat, D ^{[1
]}

Pillet, P ^{[1
]}

机构：

[1] CNRS, Aime Cotton Lab, F-91405 Orsay, France

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.96.023202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Cold inelastic collisions between confined cesium (Cs) atoms and Cs-2 molecules are investigated inside a CO2 laser dipole trap. Inelastic atom-molecule collisions can be observed and measured with a rate coefficient of similar to 2.6x10(-11) cm(3) s(-1), mainly independent of the molecular rovibrational state populated. Lifetimes of purely atomic and molecular samples are essentially limited by rest gas collisions. The pure molecular trap lifetime ranges 0.3-1 s, 4 times smaller than the atomic one, as is also observed in a pure magnetic trap. We give an estimation of the inelastic molecule-molecule collision rate to be similar to 10(-11) cm(3) s(-1).

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页数：4

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