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MO: Fachverband Molekülphysik
MO 13: Ultrafast Dynamics II
MO 13.8: Vortrag
Mittwoch, 12. März 2025, 12:45–13:00, HS XVI
Single and Double Ionization of Pyridine and Pyridine-water Complexes — •Sitanath Mondal1, Brendan Wouterlood1, Myriam Drissi2, Gustavo A. Garcia2, Laurent Nahon2, Frank Stienkemeier1, and Sebastian Hartweg1 — 1Institute of Physics, Albert-Ludwigs-Universität Freiburg, Germany — 2Desirs Beamline, Synchrotron Soleil, St. Aubin, France
Cell and gene damage caused by slow electrons created by secondary processes after interaction with ionizing radiation is an important field of research. Photoelectron studies of biomolecule-water complexes in the gas phase can give us insight about some of the fundamental processes producing low energy secondary electrons and inducing fragmentation of cationic products. I will present a photoelectron photoion coincidence study of pyridine, pyridine clusters, and pyridine-water complexes considering single and double ionization processes. Our data provides insight on the single and double ionization energies of these systems and reveals differences in the dissociation pathways of pyridine in different environments. The ion-ion coincidence spectroscopy allows us to distinguish between different local double ionization and non-local double ionization mechanisms like intermolecular Coulombic Decay.
Keywords: Pyridine; Photoelectron; ion ion coincidence; ionization; intermolecular Coulombic Decay