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MO: Fachverband Molekülphysik
MO 6: Electronic Spectroscopy II
MO 6.6: Vortrag
Dienstag, 10. März 2020, 15:15–15:30, f102
Studying the dynamics and decay channels of C4O− in the electrostatic Cryogenic Storage Ring — •V.C. Schmidt1, K. Blaum1, P. Fischer2, S. George2, M. Grieser1, F. Grussie1, J. Göck1, R. von Hahn1, Á. Kálosi1, H. Kreckel1, P.M. Mishra1, D. Müll1, O. Novotný1, F. Nuesslein1, D. Paul1, S. Saurabh1, C. Schumacher1, L. Schweikhard2, P. Wilhelm1, and A. Wolf1 — 1Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany — 2Institut für Physik, Universität Greifswald, 17489 Greifswald, Germany
The electrostatic Cryogenic Storage Ring (CSR) at the Max Planck Institute for Nuclear Physics in Heidelberg offers a variety of experimental methods for the study of charged molecules. By cooling the experimental vacuum chambers down to 6K, a unique environment with nearly negligible blackbody radiation is created, allowing even infrared-active systems to lower their internal energies down to a few Kelvin through radiative cooling [1].
Photo-induced electron detachment and fragmentation of the astrophysically relevant C4O− anion were studied as a benchmark system. To this end, a tunable, pulsed OPO laser was used to induce resonant fragmentation into the neutral CO and the charged C3− fragments. The fragmentation process in dependence of photon energy as well as its evolution with storage time in the CSR were studied. Preliminary results will be presented and discussed.
[1] C. Meyer et al., Phys. Rev. Lett. 119, 023202 (2017)