Rostock 2019 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 21: Cluster II (joint session A/MO)
A 21.1: Poster
Mittwoch, 13. März 2019, 16:15–18:15, S Fobau Physik
Investigation of 2p Auger decay in argon clusters by electron-electron and electron-photon coincidences — •Catmarna Küstner-Wetekam1, Philipp Schmidt1, Christian Ozga1, Huda Otto1, Arno Ehresmann1, Uwe Hergenhahn2,3, André Knie1, and Andreas Hans1 — 1Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany — 2Max Planck Institute for Plasma Physics Wendelsteinstr. 1, 17491 Greifswald, Germany — 3Leibniz Institute of Surface Modification, Permoserstr. 15, 04318 Leipzig, Germany
The response of prototype systems to ionizing soft X-ray irradiation is of crucial interest for the study of fundamental processes in radiation chemistry. Here we investigate Auger processes following 2p inner-shell ionization of argon atoms and clusters and discuss differences in the spectra of the atomic and the condensed sample. These Auger processes are important for the population of the initial states of various interatomic processes such as the Interatomic Coulombic Decay (ICD) and Radiative Charge Transfer (RCT). The coincident measurement of two electrons or one electron and one photon makes it possible to gain new insights into these processes.