Erlangen 2022 – scientific programme
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MO: Fachverband Molekülphysik
MO 15: Poster 2
MO 15.8: Poster
Wednesday, March 16, 2022, 16:30–18:30, P
Probing vibrational wave packets in the electronic ground state of methyl p-tolyl sulfoxide via time-resolved PECD — •Nicolas Ladda1, Max Waters2, Vít Svoboda2, Mikhail Belozertsov2, Sudheendran Vasudevan1, Simon Ranecky1, Tonio Rosen1, Sagnik Das1, Jayanta Ghosh1, Hangyeol Lee1, Hendrike Braun1, Thomas Baumert1, Hans Jakob Wörner2, and Arne Senftleben1 — 1Institut für Physik, Universität Kassel, 34132 Kassel, Germany — 2Laboratorium für Physikalische Chemie, ETH Zürich, 8093Zürich, Switzerland
The dynamic change of the chiral character upon the laser-induced vibrational motion in the electronic ground state of methyl p-tolyl sulfoxide (MTSO) is investigated. For this purpose, the forward/backward asymmetry of the photoelectron angular distribution (PAD) with respect to the propagation direction of ionising circularly polarised light of the randomly oriented chiral molecule, known as photoelectron circular dichroism (PECD), was measured. Geometry dependent ionisation rates of a molecule when interacting with an ultrashort laser pulse causes the formation of a coherent oscillating wave packet in the electronic ground state. The vibrational motion - umbrella motion of the sulfoxide molecule - changes the chiral character of the molecule, which can be studied by probing the time-resolved PECD with a VUV femtosecond laser pulse.