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SAMOP 2023 – scientific programme

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A: Fachverband Atomphysik

A 27: Poster III

A 27.14: Poster

Thursday, March 9, 2023, 16:30–19:00, Empore Lichthof

Interatomic Two-Electron-One-Electron decay following 4d ionization in Xe — •Christina Zindel1, Catmarna-Sophia Küstner-Wetekam1, Lutz Marder1, Niklas Golchert1, Jenni Autio2, Teemu Salmela2, Minna Patanen2, Arno Ehresmann1, and Andreas Hans11Institut für Physik and CINSaT, University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany — 2Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, Box 3000, FI-90014, Finland

The decay behavior of excited atomic systems is influenced by their environment such that new possible relaxation processes might emerge when changing from isolated particles to van-der-Waals bound rare gas clusters. The latter represent prototype systems, which allow the study of fundamental processes as a first step toward more complex structures. Here, we investigate an interatomic variant of the so-called Two-Electron-One-Electron (TEOE) process, also referred to as three-electron Interatomic or Intermolecular Coulombic Decay (ICD). After 4d photoionization of Xe and following Auger-Meitner decay, a two-vacancy 5s05p6 state will be prepared. Subsequently, the simultaneous filling of both inner-valence holes leads to the emission of a third electron from a neighboring atom. Multi-coincidence spectroscopy will be used to analyze the characteristic electron signal.

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