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Electronic state-lifetime interference in resonant Auger spectra: a tool to disentangle overlapping core-excited states
Univ Paris 06, Univ Paris 04, CNRS, UMR 7614,Lab Chim Phys Matiere & Rayonnement, F-75005 Paris, France..
Univ Paris 06, Univ Paris 04, CNRS, UMR 7614,Lab Chim Phys Matiere & Rayonnement, F-75005 Paris, France.;LOrme Merisiers, Synchrotron SOLEIL, BP 48, F-91192 Gif Sur Yvette, France..
LOrme Merisiers, Synchrotron SOLEIL, BP 48, F-91192 Gif Sur Yvette, France..
Univ Paris 06, Univ Paris 04, CNRS, UMR 7614,Lab Chim Phys Matiere & Rayonnement, F-75005 Paris, France.;LOrme Merisiers, Synchrotron SOLEIL, BP 48, F-91192 Gif Sur Yvette, France..
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2016 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 18, no 22, 15133-15142 p.Article in journal (Refereed) Published
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Abstract [en]

We have measured resonant-Auger decay following Cl 1s(-1) excitations in HCl and CH3Cl molecules, and extracted the pseudo-cross sections of different Cl 2p(-2) final states. These cross sections show clear evidence of shake processes as well as contributions of electronic state-lifetime interference (ELI). To describe the spectra we developed a fit approach that takes into account ELI contributions and ultrafast nuclear dynamics in dissociative core-excited states. Using this approach we utilized the ELI contributions to obtain the intensity ratios of the overlapping states Cl 1s(-1)4p pi/1s(-1)4p sigma in HCl and Cl 1s(-1)4pe/1s(-1)4pa(1) in CH3Cl. The experimental value for HCl is compared with theoretical results showing satisfactory agreement.

Place, publisher, year, edition, pages
2016. Vol. 18, no 22, 15133-15142 p.
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Atom and Molecular Physics and Optics
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URN: urn:nbn:se:uu:diva-299723DOI: 10.1039/c6cp01998fISI: 000378273500043PubMedID: 27199185OAI: oai:DiVA.org:uu-299723DiVA: diva2:950004
Available from: 2016-07-26 Created: 2016-07-26 Last updated: 2016-07-26Bibliographically approved

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Piancastelli, Maria Novella
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