Mainz 2017 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 9: Posters 1: Dichroism, VUV and Xray, Clusters, and Cold Molecules

MO 9.1: Poster

Dienstag, 7. März 2017, 17:00–19:00, P OG1

Theoretical study of photoelectron circular dichroism in the multiphoton ionization of bicyclic ketones — •Anne Dorothee Müller, Anton N. Artemyev, and Philipp V. Demekhin — Institut für Physik, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel

Recently [1-3], it was demonstrated experimentally that absorption of several circularly polarized photons in the multiphoton ionization spectra of randomly oriented chiral molecules by femtosecond laser pulses may result in a considerable photoelectron circular dichroism (PECD) effect. So far, a reliable quantitative theoretical interpretation of these experimental results is missing. Here, we perform a systematical investigation of PECD in the resonance enhanced multiphoton ionization and above threshold ionization spectra of camphor and fenchone, by numerically solving the time-dependent Schrödinger equation for the single-active-electron wave-packet in a chiral molecular potential in the presence of intense circular polarized laser pulses [4]. Theoretical results obtained for randomly oriented and fixed-in space molecules are presented and compared with experiments [1].

[1] C. Lux et al., Angew. Chem. Int. Ed. 51, 5001 (2012); ChemPhysChem 16, 115 (2015); J. Phys. B 49, 02LT01 (2016).

[2] M. H. M. Janssen and I. Powis, Phys. Chem. Chem. Phys. 16, 856 (2014).

[3] S. Beaulieu et al., New J. Phys. 18, 102002 (2016).

[4] A.N. Artemyev, A.D. Müller, D. Hochstuhl, and Ph.V. Demekhin, J. Chem. Phys. 142, 244105 (2015).