Fission of small multiply charged gold clusters

The results of collision-induced fragmentation measurements on Au 3 2+, Au 4 2+, Au 5 2+, and Au 4 3+ are presented. In all cases, channels involving fission (separation of charged fragments) are observed. Neutral loss channels are not observed. Fission cross-sections (of the order of 50–100 Å 2 wit...

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Bibliographic Details
Published in:Chemical physics letters 1989-03, Vol.156 (1), p.14-18
Main Authors: Saunders, W.A., Fedrigo, S.
Format: Article
Language:English
Subjects:
Atomic and molecular clusters
Atomic and molecular physics
Exact sciences and technology
Physics
Studies of special atoms, molecules and their ions
clusters
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Summary:The results of collision-induced fragmentation measurements on Au 3 2+, Au 4 2+, Au 5 2+, and Au 4 3+ are presented. In all cases, channels involving fission (separation of charged fragments) are observed. Neutral loss channels are not observed. Fission cross-sections (of the order of 50–100 Å 2 with Xe) are much larger than fragmentation cross-sections of singly charged ions and are relatively insensitive to the target gas. The collision-energy dependence of the branching ratios shows that Au 5 2+ → Au 3 2+ + Au 2 + and Au 4 3+ → Au 3 2+ +Au + are the respective lowest decay channels.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(89)87072-1