Rostock 2019 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 10: Posters 1: Cold Molecules, High Resolution Spectroscopy, and Theory

MO 10.8: Poster

Dienstag, 12. März 2019, 16:30–18:30, S Foyer LLM

Modifications and simulations for a Velocity Map Imaging device aiming for methane activation by transition metal cations — •Lisa-Medarda Retter, Jennifer Meyer, Tim Michaelsen, Björn Bastian, Franziska Krammer, and Roland Wester — Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, 6020 Innsbruck, Austria

Our aim is to image the dynamics of transition metal cations with small hydrocarbons, namely the system of tantalum ions with methane [1,2]. In order to study elementary reaction dynamics and energy distributions into different products we operate our experiment under single collision conditions. This is achieved by crossing a neutral molecular beam with an ion beam produced by a laser vaporization source. Detection is managed via velocity map imaging, which allows for the measurement of differential cross sections [3]. We have recently enhanced the experimental setup with alterations in the form of a conductance limiter as well as a supplementary detector for the ion beam. Simulations in SIMION for these modifications as well as currently planned ones are shown for the system of tantalum cations reacting with methane. [1] H. Schwarz. Angew. Chem. Int. Ed. Engl., 1991, 7, 30 [2] L.G. Parke, C.S. Hinton, P. B. Armentrout. J. Phys. Chem. C 2007, 111, 17773-17787. [3] R. Wester, PCCP, 2014, 16, 396