Freiburg 2024 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 18: Poster: Cluster
MO 18.10: Poster
Mittwoch, 13. März 2024, 17:00–19:00, Tent C
Towards Femtochemistry in a Micro-Solvated Environment — •Deepak K. Pandey1, Liliana M. Ramos Moreno1, Claus-Peter Schulz2, and Jochen Mikosch1 — 1Institut für Physik, Universität Kassel, Heinrich Plett Str. 40, 34132 Kassel, Germany — 2Ultrafast XUV-Physics, Max Born Institute (MBI), Max-Born-Straße 2A, 12489 Berlin, Germany
Chemical reactions, intrinsic to both natural processes and technological advancements, exhibit diverse dynamics, particularly within the realm of solution-phase environments. Understanding these dynamics is crucial, especially when employing gas-phase techniques to investigate reactions in solution, a trend that has gained prominence. In contrast to the popular liquid-jet technique, we aim to systematically introduce water molecules to a gas-phase photochemical reaction in a bottom-up approach - one at a time. Our experimental setup utilizes the water cluster technique pioneered by Udo Buck in combination with a Photoelectron Photoion Coincidence (PEPICO) spectrometer. At the University of Kassel, we aim to investigate the impact of micro-solvation on chemical reactions, ultimately using VUV light as a probe. The initial focus is on the steric effects of water on photochemical dynamics, employing a conventional pump-probe experiment to study processes such as photodissociation and photo-induced isomerization reactions. Our poster will focus on the experimental approach, characterization of the water cluster source and the spectrometer, and experimental advance toward studying photochemical reactions.
Keywords: PEPICO; Pump-probe Spectroscopy; water clusters; micro-solvation; chemical dynamics