Mainz 2017 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 8: XUV/X-ray spectroscopy II

A 8.1: Hauptvortrag

Montag, 6. März 2017, 17:00–17:30, N 2

Angular resolved inner-shell photoionization spectra of randomly oriented and fixed-in-space methane and methyloxirane — •Philipp Demekhin — Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel

Recent progress in the development of experimental detection techniques enabled a set of new experiments on molecular photoionization in the angular-resolved mode. Interpretation of the results of such experiments requires development of new advanced nonstandard theoretical and computational approaches. In this talk, we first discuss theoretical background of the angular-resolved spectroscopy of molecules, and then consider two recent applications performed by the theoretical methods developed in our group. For core-to-Rydberg excited methane [1], we demonstrate that angular-resolved resonant Auger decay spectra provide very insightful information on the strength of the vibronic coupling effects. For O(1s) ionization of methyloxirane [2], we show that chiral asymmetry (photoelectron circular dichroism) can be significantly enhanced already by fixing one molecular orientation axis.

[1] A. Knie, et al., Phys. Rev. Lett. 116, 193002 (2016).

[2] M. Tia, et al., arXiv:1609.03828v1 (2016).