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MO: Fachverband Molekülphysik
MO 8: MO Poster 2
MO 8.14: Poster
Dienstag, 10. März 2020, 17:00–19:00, Empore Lichthof
Correlated Electronic Dynamics of Helium in a Chiral Environment — •Manel Mondelo-Martell1,2, Christiane P. Koch1,2, and Daniel M. Reich1,2 — 1Theoretische Physik,, Freie Universität Berlin — 2Institut fr Physik, Universität Kassel
Chirality is the fundamental symmetry property defining an object that cannot be superimposed on its mirror image by any translation or rotation. Its relevance in different fields, from AMO physics to drug design, originates in the importance of chiral interactions: while both mirror images of a chiral object (enantiomers) will give the same response in front of a non-chiral probe, this is not true when interacting with another chiral system, such as circularly polarized light or aminoacids. This difference allows for chiral discrimination of samples using light, and determines the effects of drugs in our bodies.
In molecular systems, chirality is usually understood in terms of the spacial arrangement of the nuclei. Nevertheless its imprint on the electronic motion, made evident by the Photoelectron Circular Dichroism (PECD) —the asymmetry in forward-backward scattering of the photoelectrons emitted via irradiation with left and right circularly polarized light—, is still not fully understood. Hereby we present time–resolved simulations of the electronic dynamics of the photoionization process of the helium atom in a chiral environment. Through the use of the MCTDHF method[2] we are able to include correlation effects, and give more insight on the role of chirality in the electronic motion.
[1] I. Powis, in Adv. Chem. Phys. (2008), pp. 267-329. [2] J. Zanghellini, et al., Laser Phys. 13, 1064 (2003)