Mainz 2017 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 9: Posters 1: Dichroism, VUV and Xray, Clusters, and Cold Molecules
MO 9.3: Poster
Dienstag, 7. März 2017, 17:00–19:00, P OG1
Broadband Photoelectron Circular Dichroism — •Tom Ring, Alexander Kastner, Philipp Hillmann, Hendrike Braun, Arne Senftleben, and Thomas Baumert — Universiät Kassel, Institut für Physik und CINSaT, D-34132 Kassel
Photoelectron circular dichroism (PECD) describes the asymmetry in the photoelectron angular distribution (PAD) with regard to the light propagation direction after ionization with circularly polarized light. First investigated by one photon synchrotron ionization,1 we demonstrated that PECD on isotropically distributed chiral molecules is accessible via 2+1 resonance enhanced multi photon ionization (REMPI) using femtosecond laser pulses and established PECD as a highly sensitive and robust analytical tool.2 A different excitation scheme is addressed within PECD studies of electrons from above threshold ionization (ATI).3
In this contribution we present an ultra-broadband approach to PECD using white light generated by an argon filled hollow-core fiber. This way the excitation scheme changes due to the combination of different wavelengths with regard to the temporal structure of the pulses and a wide range of excess energies in the PADs can be accessed simultaneously.
[1] L. Nahon et al.: J. El. Spectr. Rel. Phen., 204, 322 (2015)
[2] C. Lux et al.: Chem. Phys. Chem 16, 115 (2015)
[3] C. Lux et al.: J. Phys. B 49, (2016)