Collision induced dissociation of doubly charged stored metal cluster ions

verfasst von

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.

Externe Organisation(en)

Johannes Gutenberg-Universität Mainz

Typ

Artikel

Journal

Rapid Communications in Mass Spectrometry

Band

11

Seiten

1592-1595

Anzahl der Seiten

4

ISSN

0951-4198

Publikationsdatum

1997

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Analytische Chemie, Spektroskopie, Organische Chemie