학술논문
Ultrafast ionization and fragmentation dynamics of polycyclic atomatic hydro-carbons by XUV radiation
Document Type
Author
Manschwetus, B.; Chopra, P.; Tikhonov, D.; Köckert, H.; Gruet, S.; Lahl, J.; Maclot, S.; Peschel, J.; Steber, A. L.; Lee, J. W.L.; Boll, R.; Bari, S.; Dörner, S.; Allum, F.; Erk, B.; He, Lanhai; Passow, C.; Rompotis, D.; Lemmens, A.; Mason, R.; Heathcote, D.; Burt, M.; Wiese, J.; Johny, M.; Müller, E.; Ziaee, F.; Kazemi, M. M.; Schirmel, N.; Olshin, P.; Cheng, X.; Ramm, D.; Trippel, S.; Mullins, T.; Rijs, A.; Küpper, J.; Vallence, C.; Brouard, M.; Rolles, D.; Johnsson, P.; Schnell, M.
Source
31st International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2019,Deauville, France,-- Free Electron Laser. 1412
Subject
Language
English
ISSN
1742-6588
Abstract
In the interstellar medium polycyclic aromatic hydrocarbon molecules (PAH) are exposed to strong ionizing radation leading to complex organic photochemistry. We investigated these ultrafast fragmentation reac-tions after ionization of the PAHs phenanthrene, fluorene and pyrene at a wavelength of 30.3 nm using pump probe spectroscopy at a free electron laser. We observe double ionization and afterwards hydrogen abstraction and acetylene loss with characteristic time scales for the reaction processes below one hundred femtoseconds.