Hannover 2016 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 19: Posters 4: Novelties in Molecular Physics: Femtosecond Spectroscopy, Molecular Clusters, Cold Molecules and Helium Droplets
MO 19.1: Poster
Donnerstag, 3. März 2016, 16:30–19:00, Empore Lichthof
Time-Dependent Modeling of the Ionization Dynamics in Chiral Molecules — •Messan Afande1, Behnam Nikoobakht2, R. Esteban Goetz1, Timur Isaev2, Robert Berger2, and Christiane P. Koch1 — 1Theoretische Physik, Universität Kassel, Kassel, Germany — 2Theoretische Chemie, Phillips-Universität Marburg, Marburg, Germany
Experiments based on femtosecond polarized laser pulse excitation of chiral molecules reveal a circular dichroism in the measured photoelectron signal. The observed dichroism is used to get insight into the dynamics of chiral molecules, in particular, in the characterization of the handedness of such molecules. A combination of ab initio calculations with a single center expansion reproduces the experimental results semi-quantitatively. Here, this theoretical framework is extended to a time-dependent approach. This allows the study of dynamical effects, including the dependence on the pulse parameters such as chirps. The time-dependent study aims at a better understanding of the dynamics in the ionization process of chiral molecules. Here, we present the time-dependent modeling approach and first results.