Freiburg 2024 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 14: Atomic Clusters (joint session A/MO)
MO 14.4: Vortrag
Mittwoch, 13. März 2024, 15:15–15:30, HS 1015
Measurements of Electron-Photon Coincidences from Local and Non-Local Electronic Relaxation Processes in Rare-Gas Clusters after Excitation with Synchrotron Radiation from Multi-Bunch Operation Mode — •Johannes Viehmann1, Andreas Hans1, Christian Ozga1, Nils Kiefer1, Emilia Heikura1, Lutz Marder1, Catmarna Küstner-Wetekam1, Uwe Hergenhahn2, and Arno Ehresmann1 — 1Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany — 2Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6 14195 Berlin Germany
Investigating interatomic (or intermolecular) processes in dense media is of interest for understanding the emergence of new properties in conglomerates of interacting particles. This is a stepping stone in bottom up approaches to describe complex environments like biological relevant systems. Our group has used electron-photon coincidence measurements to investigate local and non-local electronic relaxation processes after inner-valence excitation with synchrotron radiation of rare gas clusters. Coincidence measurements at synchrotrons have been restricted to single bunch operation modes of the facilities due to necessities of proper time references. Here, we suggest a technique to expand the use of such electron-photon-coincidence measurements to arbitrary synchrotron filling patterns and show first benchmark results.
Keywords: Coincidence Measurements; Electron-Photon-Coincidence; Synchrotron; Rare Gas Clusters; Interatomic Processes