SPECTROSCOPIC OBSERVATION OF A METASTABLE ELECTRONICALLY EXCITED HE-4(+)

被引：24

作者：

VONISSENDORFF, B ^{[1
]}

HABERLAND, H ^{[1
]}

FROCHTENICHT, R ^{[1
]}

TOENNIES, JP ^{[1
]}

机构：

[1] MAX PLANCK INST STROMUNGSFORSCH,D-37073 GOTTINGEN,GERMANY

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 233卷 / 1-2期

关键词：

D O I：

10.1016/0009-2614(94)01425-U

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：

In the size distribution of ionized helium clusters produced by electron impact ionization of very large neutral clusters (N > 10(5) atoms), He-4(+) is the most abundant small cluster ion. This observation has recently received considerable attention, since in theoretical calculations no specially stable structure for the tetramer ion could be found. Measurements of the photoabsorption cross section and of the fragment kinetic energy release now indicate that this 'magic' He-4(+) is in a metastable electronically excited state.

引用

页码：23 / 27

页数：5

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