Orientation effects in multiple ionization of molecules by fast ions

被引：54

作者：

Werner, U

Kabachnik, NM

Kondratyev, VN

Lutz, HO

机构：

[1] Fakultät für Physik, Universität Bielefeld, Bielefeld

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.79.1662

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The multiple ionization and dissociation of N-2 molecules by fast He+ ions was studied by the coincident measurement of correlated fragment-ion momenta using a position-and time-sensitive multiparticle detector. The dependence of the cross section on the alignment of the molecular axis with respect to the beam axis was determined. The results show that for higher degrees of ionization the cross section has a pronounced minimum for molecules oriented perpendicular to the beam. The quantitative interpretation of the observed results is based on an extended version of the statistical energy deposition model.

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页码：1662 / 1665

页数：4

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