SAMOP 2023 – scientific programme
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A: Fachverband Atomphysik
A 22: Atomic Clusters (joint session A/MO)
A 22.6: Talk
Thursday, March 9, 2023, 12:30–12:45, F107
Experimental studies on Interatomic Coulombic Decay after inner-shell ionization of heterogeneous rare gas clusters — •Catmarna Küstner-Wetekam1, Lutz Marder1, Dana Bloß1, Nils Kiefer1, Uwe Hergenhahn2, Arno Ehresmann1, Přemysl Kolorenč3, and Andreas Hans1 — 1Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany — 2Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany — 3Institute of Theoretical Physics, Charles University, V Holesovickach 2, 180 00 Prague, Czech Republic
Non-local decay mechanisms play an important role in the relaxation of electronic vacancies in dense media such as biological samples. To explore these mechanisms in a less complex environment, rare gas clusters can be used as a prototype system for experiments. The use of multi-coincidence spectroscopy enables the detection of core-level Interatomic Coulombic Decay (ICD), which is a comparatively weak process in relation to the local Auger decay followed by Radiative Charge Transfer (RCT). Here, we present the observation of changes in ICD efficiency when going from homogeneous Ar and Kr clusters to heterogeneous ArKr clusters and thereby introducing a different environment to the excited atom in the respective cluster.