SAMOP 2023 – scientific programme

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A: Fachverband Atomphysik

A 22: Atomic Clusters (joint session A/MO)

A 22.4: Talk

Thursday, March 9, 2023, 12:00–12:15, F107

Electron-Photon Coincidence Measurements at Synchrotron Facilities with Arbitrary Filling Pattern — •Johannes Viehmann, Andreas Hans, Christian Ozga, and Arno Ehresmann — Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany

Coincidence measurements are an important experimental tool in atomic or molecular physics. Our group has used electron-photon coincidence measurements to investigate rare gas clusters after synchrotron irradiation. The clusters exhibit a plethora of local and non-local electronic relaxation processes after core hole excitation. Most of these pathways produce free electrons and/ or photons. In order to distinguish signals of certain pathways from the general background, coincidence measurements are very useful.

So far, the combination of coincidence techniques with synchrotron radiation has mainly been restricted to the single bunch operation mode of the synchrotron facility due to difficulties in data acquisition. Here, we present a solution to combine coincidence measurements with multi-bunch operation modes and an example of using such technique to study rare gas clusters.