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MO: Fachverband Molekülphysik
MO 6: Electronic Spectroscopy II
MO 6.5: Vortrag
Dienstag, 10. März 2020, 15:00–15:15, f102
Investigation of the fragmentation of Isocyanic acid HNCO after inner-shell excitation by soft x-ray radiation — •Marius Gerlach1, Fabian Holzmeier2, Markus Gühr3, John Bozek4, Christophe Nicolas4, Engelbert Reusch1, Lilith Wohlfart1, Dennis Mayer3, Karina Kopp1, and Ingo Fischer1 — 1Würzburg/De — 2Milan/It — 3Potsdam/De — 4St. Aubin/Fr
Hydrogen, oxygen, nitrogen, and carbon are the basic building blocks of all organic life. Isocyanic acid, HNCO, is the smallest molecule that consists of those elements. Isocyanic acid is also ubiquitous in interstellar systems[1] and has been linked to the formation of formamide, a potentially prebiotic molecule.[2]
Our group previously investigated the normal and resonant auger electron spectra of isocyanic acid.[3] In order to further elucidate the interaction of HNCO with cosmic x-ray radiation we investigated the fragmentation after these auger processes. These experiments were carried out at the PLÉIADES Beamline at the SOLEIL Synchrotron in St. Aubin, France. The fragmentation was examined with the EPICEA detector. With this setup we simultaneously recorded the auger electrons and the time of flight of the created ions. This information reveals detailed insights into the various fragmentation pathways.
Literature: [1] Nguyen-Q-Rieu et al., Astron. Astrophys. 1991, 241, L33.
[2] M. Ferus et al., Astron. Astrophys. 2018, 616, A150.
[3] F. Holzmeier et al., J. Chem. Phys. 2018, 149, 034308.