Ultracold atom-ion collisions -: art. no. 012709

被引：175

作者：

Côté, R

Dalgarno, A

机构：

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

[2] Ctr Astrophys, Inst Theoret Atom & Mol Phys, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW A | 2000年 / 62卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.62.012709

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Studies of charge transfer and total cross sections in elastic collisions of atom-ion alkali metals at ultralow temperatures are reported. Calculations for Na+Na+ have been carried out with the best available (2)Sigma(g)(+) and (2)Sigma(u)(+) potential curves. As functions of energy, the cross sections show considerable structure and are large in the limit of low temperature. The scattering lengths were also computed, and the effective range expansion verified. For higher temperatures, we compare quantal and semiclassical results, and investigate the range of;applicability of the Langevin formula. Even at temperatures of a few degrees kelvin, the charge-transfer cross sections an large, and could provide an efficient way to produce cold ions.

引用

页数：6

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