METASTABLE FRAGMENTATION OF NE4+ CLUSTER ION INITIATED BY EXCIMER DECAY

被引：28

作者：

FOLTIN, M

MARK, TD

机构：

[1] Institut für Ionenphysik, Leopold Franzens Universität, A 6020 Inssbruck

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 180卷 / 04期

关键词：

D O I：

10.1016/0009-2614(91)90326-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new metastable decay reaction of the Ne4+; cluster ion produced by electron-impact ionization has been studied with a double-focusing sector field mass spectrometer. Appearance energy measurements of this decay reaction Ne4+ --> Ne2+ + 2Ne provide quantitative support in favour of the suggested decay model, i.e. the radiative decay of an excimer dimer embedded in the rare-gas cluster ion is the origin of this new, unusual metastable fragmentation channel leading to delayed ejection of more than one monomer. Moreover, the dependence of the metastable fraction on the time interval between ionization and fragmentation obtained supports this model qualitatively.

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页码：317 / 320

页数：4

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