Thermalization of magnetically trapped metastable helium

被引：13

作者：

Browaeys, A ^{[1
]}

Robert, A ^{[1
]}

Sirjean, O ^{[1
]}

Poupard, J ^{[1
]}

Nowak, S ^{[1
]}

Boiron, D ^{[1
]}

Westbrook, CI ^{[1
]}

Aspect, A ^{[1
]}

机构：

[1] Inst Opt, Lab Charles Fabry, CNRS, UMR 8501, F-91403 Orsay, France

来源：

PHYSICAL REVIEW A | 2001年 / 64卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.64.034703

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have observed thermalization by elastic collisions of magnetically trapped metastable helium atoms. Our method directly samples the reconstruction of a thermal energy distribution after the application of a RF knife. The relaxation time of our sample toward equilibrium gives an elastic collision rate constant of alpha similar to5 x 10(-9) cm(3)/s at a temperature of 1 mK. This value is close to the unitarity limit.

引用

页数：4

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