Journal Article

PreJuSER-25371

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Photon-induced thermal desorption of CO from small metal-carbonyl clusters

Lüttgens, G.FZJ* ; Pontious, N.FZJ* ; Bechthold, P. S.FZJ* ; Neeb, A. V.FZJ* ; Eberhardt, W.FZJ*

2002
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/902  doi:10.1103/PhysRevLett.88.076102

Abstract: Thermal CO desorption from photoexcited free metal-carbonyl clusters has been resolved in real time using two-color pump-probe photoelectron spectroscopy. Sequential energy dissipation steps between the initial photoexcitation and the final desorption event, e.g., electron relaxation and thermalization, have been resolved for Au-2(CO)(-) and Pt-2(CO)(5)(-). The desorption rates for the two clusters differ considerably due to the different numbers of vibrational degrees of freedom. The unimolecular CO-desorption thresholds of Au-2(CO)(-) and Pt-2(CO)(5)(-) have been approximated by means of a statistical Rice-Ramsperger-Kassel calculation using the experimentally derived desorption rate constants.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Elektronische Eigenschaften (IFF-IEE)

Research Program(s):

1. Kondensierte Materie (M02)

Appears in the scientific report 2002
Notes: This version is available at the following Publisher URL: http://prl.aps.org

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