Erlangen 2018 – scientific programme

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A: Fachverband Atomphysik

A 25: Poster Session I

A 25.7: Poster

Tuesday, March 6, 2018, 16:15–18:15, Redoutensaal

Tracing the molecular potential energy landscape on rovibronic emission maps of molecular hydrogen — •Philipp Schmidt, Andreas Hans, Christian Ozga, Arno Ehresmann, and André Knie — Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany

The band spectra of molecular systems in absorption or emission are an integral part in the history and development of spectroscopic observations. While generally assumed to be well understood and a case for textbooks, there are still transitions between bound and unbound states in even the simplest molecules such as hydrogen that require extensive theoretical treatment to explain or exhibit an intertwined system of lines hard to identify. By examining the photon and ion emissions of such systems in dependance of their internal energy, the full process from excitation to final deexcitation can be monitored. When performed over the complete set of accessible states at once, the resulting map disentangles not only the individual processes from each other, but also gives a unique view on their interaction at the respective boundaries. Here we present such a treatment for molecular hydrogen and its isotopes through comparing experimental results after selective excitation by synchrotron radiation and theoretical models in the entire regime of singly excited states.