Hannover 2016 – scientific programme
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A: Fachverband Atomphysik
A 22: Interaction with VUV and X-ray light
A 22.1: Poster
Tuesday, March 1, 2016, 16:30–19:00, Empore Lichthof
Complete characterization of the Lyman band continuum emissions of molecular hydrogen and deuterium by photon-induced fluorescence spectrometry — •Philipp Schmidt1, Andreas Hans1, Christian Ozga1, Philipp Reiß1, Ltaief Ben Ltaief1, Arno Ehresmann1, André Knie1, and Michèle Glass-Maujean2 — 1Institut für Physik and Center for Interdisciplinary Nanostructure Science and Technology, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany — 2Laboratoire de Physique Moléculaire pour l’Atmosphère et l’Astrophysique, Université P. et M. Curie/CNRS, 4 pl Jussieu, 75252 Paris Cedex 05, France
The emission of molecular hydrogen and its isotopes in the far ultraviolet regime contains a continuous spectrum with particular fluctuations next to the discrete band transitions from the B and C electronic states. While these have been attributed to the dissociative transition into the continuum of the X ground state for quite some time, the investigations with simulated spectra are severely limited at these wavelengths due to a multitude of overlapping features. Here we present a complete analysis of these continuous emission features after selective excitation by photoexcitation with monochromatized synchrotron radiation as part of a greater investigation encompassing all the emission features and electronic transitions in the far ultraviolet regime. Separated by their electronic state and upper vibrational level, the individual spectra are compared to theoretical calculations and their effect on the emission in general are discussed.