Mainz 2026 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 30: Poster – Molecular Spectroscopy
MO 30.13: Poster
Donnerstag, 5. März 2026, 17:00–19:00, Philo 1. OG
Measuring a complete quantitative photon-excitation photon-emission map of molecular hydrogen — •Adrian Krone, Johannes Viehmann, Dana Bloß, Niklas Golchert, Emilia Heikura, Catmarna Küstner-Wetekam, Lutz Marder, Yusaku Terao, Andreas Hans, and Arno Ehresmann — Institute of Physics and CINSat, University of Kassel, 34132 Kassel, Germany
Fluorescence spectra of molecular hydrogen singly-excited by narrow bandwidth (≈1 meV) synchrotron radiation are measured in 1 meV steps scanning over all rovibronic excitations of room-temperature H2. The spectra are combined to construct a quantitative photon-excitation photon-emission (PhexPhem) map, which can provide improved insights into astronomical data from UV telescopes. A prominent feature of the H2 PhexPhem map are the Condon diffration bands, which can be used to extend benchmarking of potential energy curves to be sensitive to their shape at large internuclear distances.
Keywords: Diatomics; Hydrogen; Potential Energy Curves; Fluorescence Spectroscopy