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Specific production of very long-lived core-excited sulphur atoms by 2p-1s excitation of the OCS molecule followed by ultrafast dissociation
Uppsala University.
University of Lund.
Uppsala University.ORCID iD: 0000-0002-0317-0190
Uppsala University.
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2006 (English)In: Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, E-ISSN 1361-6455, Vol. 39, no 12, L269-L275 p.Article in journal (Refereed) Published
Abstract [en]

A core-excited sulfur state with a lifetime almost one order of magnitude longer than in molecular 2p core-hole states is selectively produced by ultrafast dissociation of S 2p → σ* excited OCS. Clear evidence for this is provided by strong atomic peaks (20% of the total intensity) in x-ray fluorescence but very weak ones (2%) in the corresponding resonant Auger spectrum. Corroborating the assignment of the spectra, ab initio calculations explain the enhanced lifetime: the Auger decay of the produced 3D3 (2p53p5) sulfur state is strongly decreased as it contradicts a newly derived propensity rule of the L2,3MM Auger decay.

Place, publisher, year, edition, pages
2006. Vol. 39, no 12, L269-L275 p.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:liu:diva-54974DOI: 10.1088/0953-4075/39/12/L03OAI: oai:DiVA.org:liu-54974DiVA: diva2:312880
Available from: 2010-04-26 Created: 2010-04-26 Last updated: 2017-12-12Bibliographically approved

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Magnuson, Martin

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