Abstract
AbstractIn this note we present the first account of a study of metastable (unimolecular decay) and collision‐induced dissociation of Ar3+ 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: Ar3+* → Ar2+ and Ar3+* → 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.
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