Enhanced cooling of hydrogen atoms by lithium atoms

被引：43

作者：

Côté, R

Jamieson, MJ

Yan, ZC

Geum, N

Jeung, GH

Dalgarno, A

机构：

[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[2] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA

[3] Univ Glasgow, Dept Comp Sci, Glasgow G12 8QQ, Lanark, Scotland

[4] Univ New Brunswick, Dept Phys, Fredericton, NB E3B 5A3, Canada

[5] Dankook Univ, Dept Chem, Cheonan 330714, South Korea

[6] Univ Paris Sud, CNRS UPR 3321, Aime Cotton Lab, F-91405 Orsay, France

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.84.2806

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present calculated scattering lengths, for collisions between various isotopic forms of lithium and hydrogen atoms interacting via singlet and triplet molecular states of LiH. We demonstrate that one bound triplet level is supported for each isotopomer (LiH)-Li-7, (LiH)-Li-6, 7LiD, and (LiD)-Li-6. We obtain large calculated triplet scattering lengths that are stable against uncertainties in the potential. We present elastic and momentum transfer cross sections, and the corresponding rate coefficients, for hydrogen atoms colliding with Li-7 atoms. We suggest that enhanced cooling of trapped atomic hydrogen by Li-7 atoms is feasible.

引用

页码：2806 / 2809

页数：4

共 30 条

[1] Triplet s-wave resonance in Li-6 collisions and scattering lengths of Li-6 and Li-7 [J].