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Single and multiple photoionisation of H(2)S by 40-250 eV photons
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Soft X-Ray Physics.
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2011 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 13, no 41, 18428-18435 p.Article in journal (Refereed) Published
Abstract [en]

Multi-electron coincidence measurements on photoionisation of H(2)S have been carried out at photon energies from 40 to 250 eV. They quantify molecular field effects on the Auger process in detail and are in good agreement with the existing theory. Spectra of core-valence double ionisation of H(2)S are presented and partially analysed. Auger decays from the core-valence states produce triply charged product spectra with unexplained and surprising intensity distributions. Triple ionisation by the double Auger process from 2p hole states shows little effect of the molecular field splitting, but includes a substantial contribution from cascade processes, some involving dissociation in intermediate states. The onset of triple ionisation at the molecular geometry is determined as 61 +/- 0.5 eV.

Place, publisher, year, edition, pages
2011. Vol. 13, no 41, 18428-18435 p.
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Natural Sciences
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URN: urn:nbn:se:uu:diva-161777DOI: 10.1039/c1cp21654fISI: 000295731100021OAI: oai:DiVA.org:uu-161777DiVA: diva2:457918
Available from: 2011-11-21 Created: 2011-11-17 Last updated: 2017-12-08Bibliographically approved

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