Rotational relaxation in ultracold CO plus He collisions

被引：21

作者：

Florian, PM ^{[1
]}

Hoster, M ^{[1
]}

Forrey, RC ^{[1
]}

机构：

[1] Penn State Univ, Berks Lehigh Valley Coll, Reading, PA 19610 USA

来源：

PHYSICAL REVIEW A | 2004年 / 70卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevA.70.032709

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Cold and ultracold collisions involving rotationally hot CO molecules are investigated using quantum mechanical coupled channel, coupled states, and effective potential scattering formulations. Quenching rate coefficients are given for initial rotational levels near the dissociation threshold. The stability of the CO "super rotors" against collisional decay is compared to previous investigations involving homonuclear molecules. It is found that quasiresonant transitions provide a significantly stronger contribution to the total relaxation rate than in the comparable case of O-2. As in the case of H-2, sharp structures in the distribution of total quenching rate coefficients are found at rotational levels where quasiresonant scattering is not allowed.

引用

页码：032709 / 1

页数：7

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