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Q: Fachverband Quantenoptik und Photonik

Q 37: Collisions (with Q) (joint session MO/Q)

Q 37.1: Vortrag

Mittwoch, 8. März 2023, 14:30–14:45, F142

Gas phase investigations on dynamics of the reaction of tantalum cation Ta⁺ with carbon dioxide CO₂ — •Marcel Meta¹, Maximilian Huber¹, Maurice Birk¹, Atilay Ayasli², Tim Michaelsen², Roland Wester², and Jennifer Meyer¹ — ¹RPTU Kaiserslautern-Landau, Fachbereich Chemie, Kaiserslautern, Germany — ²Universität Innsbruck, Institut für Ionenphysik und Angewandte Physik, Innsbruck, Austria

The dynamics of the oxygen atom transfer (OAT) reaction Ta⁺ + CO₂ → TaO⁺ + CO in gas phase could be investigated under single collision conditions. The measured energy and angle differential cross sections allow us to probe the rearrangement of atoms during reaction, i.e. the atomistic dynamics [1]. The preset results were measured with our new 3D velocity map imaging setup in Kaiserslautern. The reaction is exothermic and spin forbidden in the ground state but takes place due to an efficient crossing from the quintet surface over to the triplet surface. Hence, it was found that the reaction almost proceeds with collision rate at room temperature [2-4]. The TaO⁺ velocity map images shows dominant indirect dynamics even at high collision energies with most of the additional collision energy partitioned into internal excitation.
[1] J. Meyer, R. Wester, Annu. Rev. Phys. Chem. 2017, 68, 333; [2] R. Wesendrup, H. Schwarz, Angew. Chem. Int. Ed. 1995, 34, 2033; [3] G. K. Koyanagi, D. K. Bohme, J. Phys. Chem. A 2006, 110, 1232; [4] N. Levin, J. T. Margraf, J. Lengyel, K. Reuter, M. Tschurl, U. Heiz, Phys. Chem. Chem. Phys. 2022, 24, 2623