Predissociation induced by ungerade-gerade symmetry breaking in 6Li7Li molecule

被引：15

作者：

Cacciani, P

Kokoouline, V

机构：

[1] Lab Aimee Cotton, F-91405 Orsay, France

[2] St Petersburg State Univ, Inst Phys, St Petersburg 198904, Russia

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.84.5296

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In the recent sub-Doppler experiment on the B(1)Pi(u) state of the Li-2 molecule by Bouloufa et al. [J. Chem. Phys. 111, 1926 (1999)], where the dissociation of vibrational levels due to the tunneling through the potential barrier was investigated, several vibrational levels with abnormally large dissociated rates were observed in the case of the (LiLi)-Li-6-Li-7 isotopomer. This dynamical effect cannot be explained by tunneling as in the case of Li-6(2) or Li-7(2). A Simple model of coupling between B(1)Pi(u) and 1(1)Pi(g) states involving the u-g symmetry breaking for (LiLi)-Li-6-Li-7 is proposed. Rates of the B(1)Pi(u) predissociated levels due to this coupling are calculated. A good agreement with the experiment is found.

引用

页码：5296 / 5299

页数：4

共 18 条

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