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Issue 22, 2016
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Electronic state-lifetime interference in resonant Auger spectra: a tool to disentangle overlapping core-excited states

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Abstract

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−14pπ/1s−14pσ in HCl and Cl 1s−14pe/1s−14pa1 in CH3Cl. The experimental value for HCl is compared with theoretical results showing satisfactory agreement.

Graphical abstract: Electronic state-lifetime interference in resonant Auger spectra: a tool to disentangle overlapping core-excited states

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Publication details

The article was received on 25 Mar 2016, accepted on 06 May 2016 and first published on 06 May 2016


Article type: Paper
DOI: 10.1039/C6CP01998F
Citation: Phys. Chem. Chem. Phys., 2016,18, 15133-15142
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    Electronic state-lifetime interference in resonant Auger spectra: a tool to disentangle overlapping core-excited states

    G. Goldsztejn, T. Marchenko, D. Céolin, L. Journel, R. Guillemin, J. Rueff, R. K. Kushawaha, R. Püttner, M. N. Piancastelli and M. Simon, Phys. Chem. Chem. Phys., 2016, 18, 15133
    DOI: 10.1039/C6CP01998F

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