Analysis of collision induced dissociation of Na-2(+) molecular ions

被引:34
作者
Brenot, JC
Dunet, H
Fayeton, JA
Barat, M
Winter, M
机构
[1] Laboratoire des Collisions Atomiques et Moléculaires (URA281), Université Paris-Sud, Orsay Cedex
关键词
D O I
10.1103/PhysRevLett.77.1246
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A full analysis of the collision induced dissociation of a diatomic molecular ion is presented for the first time. The experiment is essentially based on the simultaneous measurement of the momenta of the two fragments. This technique applied to the collision of Na2+ with a helium target reveals, at keV collision energies, the competition between two dissociation mechanisms: an impulsive mechanism when the target hits one Na+ core in a close encounter and an electronic mechanism when dissociation occurs after excitation of repulsive or weakly bound states.
引用
收藏
页码:1246 / 1249
页数:4
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