Erlangen 2018 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 3: Photoelectron Spectroscopy
MO 3.3: Vortrag
Montag, 5. März 2018, 11:15–11:30, PA 2.150
Multi-state Photoelectron Circular Dichroism in Femtosecond Multiphoton Ionization — Alexander Kastner1, •Tom Ring1, Roxana Savulea1, Bastian C. Krüger2, G. Barratt Park2, Tim Schäfer2, Arne Senftleben1, and Thomas Baumert1 — 1Universität Kassel, Institut für Physik und CINSaT, D-34132 Kassel, Germany — 2Institut für Physikalische Chemie, Georg-August-Universität Göttingen, D-37077 Göttingen, Germany
The asymmetry of photoelectron angular distributions (PADs) from randomly
oriented enantiomers of chiral molecules in the ionization with circularly
polarized light arises in forward/backward direction with respect
to the light propagation. This effect was termed Photoelectron Circular
Dichroism (PECD) and so far investigated using synchrotron
radiation [1, 2]. Due to the multi-photon ionization, we observed highly structured asymmetries with a magnitude in the range
of ± 10% on bicyclic Ketones [3, 4]. By scanning the laser excitation wavelength, up to three electronically distinct
resonances can be simultaneously populated. The intermediate state and the excitation wavelength define the photoelectron energy. We report on the dependence of magnitude and sign of PECD on photoelectron energy [5].
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