Freiburg 2024 – scientific programme
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MO: Fachverband Molekülphysik
MO 14: Atomic Clusters (joint session A/MO)
MO 14.5: Talk
Wednesday, March 13, 2024, 15:30–15:45, HS 1015
Extreme shift of Auger cascade energies after deep inner-shell ionization in rare-gas clusters — •Niklas Golchert1, Nils Kiefer1, Catmarna Küstner-Wetekam1, Lutz Marder1, Minna Patanen2, Christina Zindel1, Arno Ehresmann1, and Andreas Hans1 — 1Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany — 2Nano and Molecular Systems Research Unit, Faculty of Science, P.O. Box 3000, FI-90014, University of Oulu, Oulu, Finland
Closing the gap between isolated atoms and macroscopic objects, clusters serve as ideal prototype systems for fundamental research of local and non-local processes in dense media. By investigating their electron emission spectra after photoionization, detailed insights about the interactions between the constituents of a medium are gained.
Here, we present recent experimental results obtained by multielectron coincidence spectroscopy showing the strong dependence of Auger cascade energies in clusters on the charge state of the emitting ion caused by the polarization of its surrounding. These findings will deliver valuable information for future spectroscopic experiments on dense media such as clusters or liquids using high-energetic light sources.
Keywords: Cluster; Auger decay; Polarization screening; Coincidence spectroscopy