Stuttgart 2012 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 13: Poster 1: Cold Molecules, Femtosecond Spectroscopy, Molecular Dynamics

MO 13.14: Poster

Dienstag, 13. März 2012, 16:30–19:00, Poster.IV

Investigations on the Circular Dichroism in the Photoelectron Angular Distributions of Camphor and Fenchone using circularly polarized Femtosecond UV-laser pulses — Christian Lux, •Vanessa Brandenstein, Tom Bolze, Cristian Sarpe, Matthias Wollenhaupt, and Thomas Baumert — Universität Kassel, Institut für Physik und CINSaT, D-34132 Kassel, Germany

Enantiomers of a chiral molecule that are non super imposable mirror images of each other show almost the same physical properties. In the recent past experiments on enantiomers based on laser irradiation using circularly polarized ultrashort laser pulses [1,2] or synchrotron radiation [3] were realized for chiral molecules.
In this contribution we investigate the effect of Circular Dichroism on the Photoelectron Angular Distributions (PECD) in the Resonance Enhanced Multi-Photon Ionization of Camphor and Fenchone employing femtosecond ultraviolet-laser pulses [4]. Our experiments have been extended to studies of the Above Threshold Ionization and dependencies of the PECD on parameters like intensity, chirp and ellipticity.
[1] C. Logé, A. Bornschlegl, U. Boesl, Anal. Bioanal. Chem. 395, 1631-1639 (2009)
[2] P. Horsch, G. Urbasch, K.-M. Weitzel, Z. Phys. Chem. 225, 587-594 (2011)
[3] I. Powis in S. A. Rice (Ed.): Adv. Chem. Phys. 138, 267-329 (2008)
[4] C. Lux, M. Wollenhaupt, T. Bolze, Q. Liang, C. Sarpe, T. Baumert (in preparation) (2011)