Dissociation of As-4 clusters following valence photoionization and 3d core excitation

Kettunen, J. A. (author)

Urpelainen, Samuli (author): Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory

Heinasmaki, S. (author)

Huttula, M. (author)

(creator_code:org_t)

2012
2012
English.
In: Physical Review A (Atomic, Molecular and Optical Physics). - 1050-2947. ; 86:2

Related links:: http://dx.doi.org/10...; show more...; https://lup.lub.lu.s...; https://doi.org/10.1...; show less...

Abstract Subject headings

The VUV-induced photofragmentation of As-4 clusters was studied using photoelectron-photoion-coincidence (PEPICO) spectroscopy. The fragmentation pathways subsequent to outer and inner valence photoionization and resonant photoexcitation were studied by examining the cationic production as a function of electron energy. In addition, regular photoelectron spectroscopy and partial ion yield absorption spectroscopy were employed. In order to enhance the weak signal from the inner valence states, resonant core 3d excitation was used in the PEPICO experiment. The fragmentation pathways were inspected with the aid of ab initio and thermochemical calculations. The many-electron effects were found to play a major role in the observed inner valence structure and resulting photofragmentation.

By the author/editor: Kettunen, J. A.; Urpelainen, Samu ...; Heinasmaki, S.; Huttula, M.

About the subject

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