Berlin 2014 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 10: Posters 2: Biomolecules, Energy Transfer, Clusters, Quantum Chemistry, Molecular Dynamics and Chirality
MO 10.5: Poster
Dienstag, 18. März 2014, 16:30–18:30, Spree-Palais
Progress in imaging of ion molecule reactions — •Martin Stei, Eduardo Carrascosa, Alexander Dörfler, Aditya Kelkar, Thorsten Best, and Roland Wester — Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck
Recent studies using our cross beam velocity map imaging (VMI) setup are presented. We have studied the reaction of F− with CH3Cl and have observed clear influence of the geometry of the transition state on the dynamics of the reaction, especially compared to our recent studies of the reactions of F− and Cl− with CH3I [1,2]. We also report on our progress towards studying the influence of vibrational excitation of CH3I on these reactions.
Furthermore we present the characterisation of three spatial map imaging modes of our 3D VMI spectrometer using multi-photon ionisation of toluene in a focused laser beam. A consistent analytical description of the imaging properties by a Taylor expansion has been applied and spatial resolution between 2 and 4 µm could be demonstrated [3].
[1] R. Wester, Phys. Chem. Chem. Phys. 16, 396 (2013) [2] J. Mikosch, J. Zhang, S. Trippel, C. Eichhorn, R. Otto, R. Sun, W. DeJong, M. Weidemüller, W. L. Hase, R. Wester, J. Am. Chem. Soc. 135, 4250 (2013) [3] M. Stei, J. von Vangerow, R. Otto, A. H. Kelkar, E. Carrascosa, T. Best, R. Wester, J. Chem. Phys. 138, 214201 (2013)