Freiburg 2024 – scientific programme

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MO: Fachverband Molekülphysik

MO 11: X-ray Spectroscopy

MO 11.6: Talk

Wednesday, March 13, 2024, 12:15–12:30, HS 3044

Multi-electron emission from irradiated iodide anion in solution — •Yusaku Terao, Dana Bloss, Gabriel Klassen, Johannes Viehmann, Adrian Krone, Niklas Golchert, Arno Ehresmann, and Andreas Hans — Institut für Physik und Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), Universität Kassel, Heinrich-Plett-Strße 40, 34132 Kassel

Radiation effects in solvated matter is of great interests, since many aspects of them are still poorly understood and better knowledge can be beneficial for radiation protection and radiation therapy. Recently, interatomic/intermolecular processes, that transfer deposited excess energy or charge from the initially ionized size to so surrounding water molecules, were newly discovered. Some of these mechanisms have been experimentally observed in our group for the decay of the ionized Mg dication in aqueous solution by multi-electron coincidence spectroscopy. Here, we focused on iodide anion in solution, which has a large photoionization cross-section at its 3d ionization region and decays by multiple auger steps, competitors to interatomic/intermolecular processes. For a better understanding of complex decay processes of irradiated atoms and molecules in solution, multi-electron emission from iodide anion in aqueous solution by ionizing 3d iodide electrons was studied by combining the liquid micro jet technique and multi-electron coincidence spectroscopy.

Keywords: Liquid jet; Electron coincidence; Interatomic/intermolecular process; Auger steps; Radiation damage