Erlangen 2022 – scientific programme

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MO: Fachverband Molekülphysik

MO 15: Poster 2

MO 15.13: Poster

Wednesday, March 16, 2022, 16:30–18:30, P

Isosteric molecules in the time-domain — •Maximilian Pollanka, Christian Schröder, Pascal Scigalla, Andreas Duensing, Michael Mittermair, and Reinhard Kienberger — Chair for laser and x-ray physics E11, Technische Universität München, Germany

In this work, we report on photoemission timing measurements performed on small isosteric molecules in the gas phase. By comparing the photoemission time delay between the respective σ and π orbitals in the valence band of CO2 and N2O we expect to find deeper insight in the characteristics of isosterism in the time-domain. Furthermore, the isoelectronicity of CO and N2 is investigated in detail as a complementary study. Due to the similarities in molecular structure (isostericity) and electronic configurations (isoelectronicity), the pure effect of the specific element's characteristics is expected to be probed. The results regarding similarities and differences in photoemission dynamics in these molecules can serve as a stepping stone for gaining deeper insight into isosteric characteristics in these molecules and may bear the potential to draw conclusions from these simple systems to unknown or unexplored isosteric molecular bonds in general.

Scattering calculations help us to gain a greater understanding of the correlations between molecular geometry and photoemission time and therefore the isosteric influence, with the focus on assessing the differences between modeling and experimental findings.