Erlangen 2022 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 19: Poster 3
MO 19.7: Poster
Donnerstag, 17. März 2022, 16:30–18:30, P
Experimental setup towards High-Resolution Ion-Molecule Crossed Beam Imaging — •Dasarath Swaraj, Florian Trummer, Tim Michaelsen, Arnab Khan, Robert Wild, Fabio Zappa, and Roland Wester — Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, 6020 Innsbruck,Austria
Detailed insight into the dynamics of elementary reactions in the gas phase can be obtained from crossed-beam reactive scattering experiments. Crossed beam combined with velocity map imaging (VMI), angle and energy differential crossections can be obtained.[1][2] In this contribution, we present the design plan and relevant simulations for an experimental setup to investigate ion molecule reactions with higher precision than previously attainable. The ions will be created by laser ionization so that they are mostly in the vibrational ground state. In addition, according to our simulation, a proper shaping of the ionization volume and a very weak acceleration of the ions play a crucial role in deciding the ion beam energy resolution. The ion beam is overlapped with the beam of neutral molecules and the collision products are collected by the VMI spectrometer. We also plan a coincidence detection of both the ionic and neutral products after the reaction, which will be further implemented by a laser ionization scheme. With our new setup, we plan to study fundamental astrophysically significant reactions such as H2++H2→ H3++H.
[1] R. Wester, Mass Spectrometry Reviews, 2021.
[2] R.Wester, Phys. Chem. Chem. Phys., vol. 16, pp.396-405,2014.