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Specific production of very long-lived core-excited sulfur atoms by 2p(-1)sigma* excitation of the OCS molecule followed by ultrafast dissociation
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
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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 -> sigma* 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 D-3(3) (2p(5)3p(5)) 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
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-83604DOI: 10.1088/0953-4075/39/12/L03ISI: 000239306700003OAI: oai:DiVA.org:uu-83604DiVA: diva2:111512
Available from: 2007-02-13 Created: 2007-02-13 Last updated: 2017-12-14Bibliographically approved

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Magnuson, MartinBjörneholm, OlleSvensson, SvantePiancastelli, Maria Novella

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