Rostock 2019 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 20: Cold Molecules (joint session MO/A)
A 20.5: Vortrag
Mittwoch, 13. März 2019, 15:00–15:15, S HS 002 Biologie
Reaction and Spectroscopy Studies of Astrophysically relevant Anions in Multipole Traps — •Markus Nötzold, Robert Wild, Malcolm Simpson, Thomas Zurin, and Roland Wester — Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Austria
Multipole ion traps are versatile tools for the study of cold molecular ions. After the radioastronomical discovery of the first interstellar anions, interest has grown in understanding the formation and destruction pathways of negative ions in the interstellar medium (ISM). Our group has previously performed photodetachment studies on CnH− [1], CN− and C3N− anions [2], and recently begun to study the three-body recombination mechanism H2 + H− + X ⇒ H3− + X. We report on progress and the current status of these experiments. In addition to the foregoing, our group is currently developing a new multipole wire trap for our setup. We present the main features of this improvement compared to our existing 22-pole trap.
[1] T. Best, R. Otto, S. Trippel, P. Hlavenka, A. von Zastrow, S. Eisenbach, S. Jézouin, R. Wester, E. Vigren, M. Hamberg, Astrophys. J. 742, (2011).
[2] S. S. Kumar, D. Hauser, R. Jindra, T. Best, Š. Roučka, W. D. Geppert, T. J. Millar, and R. Wester, Astrophys. J. 776, (2013).