Collision induced dissociation of doubly charged stored metal cluster ions

authored by

L. Schweikhard, G. Dietrich, S. Krückeberg, K. Lützenkirchen, Clemens Walther, J. Ziegler

Abstract

Singly charged noble metal cluster ions from an external laser vaporisation source are accumulated in a Penning trap. They are subjected to electron bombardment for further ionization. The doubly charged clusters are size selected and their low energy fragmentation pathways are studied by multiple-collision-induced dissociation. The reaction products are analysed by time-of-flight detection. In general, large dusters tend to evaporate neutral atoms while small clusters fission into two singly charged fragments, one of which is a trimer. The details, however, vary and depend on the specific elements and cluster sizes us exemplified by the fragmentation of doubly charged copper, silver, gold and platinum clusters of size around n = 16.

External Organisation(s)

Johannes Gutenberg University Mainz

Type

Article

Journal

Rapid Communications in Mass Spectrometry

Volume

11

Pages

1592-1595

No. of pages

4

ISSN

0951-4198

Publication date

1997

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Analytical Chemistry, Spectroscopy, Organic Chemistry