Theoretical and experimental investigation of Electron Transfer Mediated Decay in ArKr clusters

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  • Elke Fasshauer, Univ Tromso Arctic Univ Norway, UiT The Arctic University of Tromso, Dept Chem, Ctr Theoret & Computat Chem
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  • Marko Foerstel, Tech Univ Berlin, Technical University of Berlin, Inst Opt & Atomare Phys
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  • Melanie Mucke, Uppsala Univ, Uppsala University, Dept Phys & Astron
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  • Tiberiu Anion, DESY, Deutsches Elektronen-Synchrotron (DESY), Helmholtz Association, Ctr Free Electron Laser Sci
  • ,
  • Uwe Hergenhahn, Max Planck Inst Plasma Phys, Max Planck Society

We investigate the electronic decay of an Ar 3s(-1) vacancy in medium sized ArKr clusters. The only energetically accessible, radiationless decay mechanism is Electron Transfer Mediated Decay Three (ETMD3). Here, the argon vacancy is filled by an electron from one krypton atom, and the excess energy is transferred to a second krypton atom which consequently emits an electron. For the theoretical calculation of ETMD3 spectra, in a bottom-up approach, we study the dependence of the decay width on the geometry of elementary sets of three atoms, from which any cluster can be composed. We simulate the ETMD3 spectra of medium sized ArKr clusters and compare the resulting spectra to experimental ETMD electron spectra presented earlier (Forstel et al, 2011) and in this work. We show that ETMD3 is the dominating relaxation mechanism for the cases studied here. Experimental secondary electron spectra from ArKr clusters are compared to pure Ar and pure Kr clusters.(C) 2016 Elsevier B.V. All rights reserved.

Original languageEnglish
JournalChemical Physics
Volume482
Pages (from-to)226-238
ISSN0301-0104
DOIs
Publication statusPublished - 12 Jan 2017
Externally publishedYes

    Research areas

  • Electron Transfer Mediated Decay, ETMD3, Heterogeneous noble gas clusters, Electronic decay process, ArKr, INTERATOMIC COULOMBIC DECAY, LOW-ENERGY ELECTRONS, CONFIGURATION-INTERACTION, NUCLEAR REACTIONS, UNIFIED THEORY, NE CLUSTERS, GAS, SPECTROSCOPY, SCATTERING, SPECTRA

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