Very long storage times and evaporative cooling of cesium atoms in a quasielectrostatic dipole trap -: art. no. 031402

被引：23

作者：

Engler, H ^{[1
]}

Weber, T ^{[1
]}

Mudrich, M ^{[1
]}

Grimm, R ^{[1
]}

Weidemüller, M ^{[1
]}

机构：

[1] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

来源：

PHYSICAL REVIEW A | 2000年 / 62卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.62.031402

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have trapped cesium atoms over many minutes in the focus of a CO2-laser beam employing an extremely simple laser system. Collisional properties of the unpolarized atoms in their electronic ground state are investigated. Inelastic binary collisions changing the hyperfine state lead to trap loss, which is quantitatively analyzed. Elastic collisions result in evaporative cooling of the trapped gas from 25 mu K to 10 mu K over a time scale of about 150 s.

引用

页码：31402 / 31401

页数：4

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