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Metastable Decomposition of Ar 3 + Cluster Ions Into Ar 2 + and Ar +
Author(s) -
Stephan K.,
Märk T. D.,
Märk E.,
Stamatovic A.,
Djuric N.,
Castleman A. W.
Publication year - 1983
Publication title -
beiträge aus der plasmaphysik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0005-8025
DOI - 10.1002/ctpp.19830230404
Subject(s) - metastability , ion , atomic physics , dissociation (chemistry) , cluster (spacecraft) , electron ionization , electron , mass spectrometry , argon , chemistry , physics , ionization , nuclear physics , computer science , programming language , organic chemistry , chromatography
In this note we present the first account of a study of metastable (unimolecular decay) and collision‐induced dissociation of Ar 3 + cluster ions using an experimental setup consisting of a molecular beam‐electron impact ion source and a double focussing (reversed Nier Johnson geometry) mass spectrometer. The existence of the following metastable decay processes (accessible by our sampling time window) could be demonstrated: Ar 3 + * → Ar 2 + and Ar 3 + * → Ar + . The processes were studied as a function of electron impact energy. The present results are of importance in order to provide some guidance for the development of appropriate theoretical models for the dissociation of cluster ions.