A4 Refereed article in a conference publication
Time-resolved dynamics of thiophene dication - probing parent molecule survival times and multi-step dissociation processes of cyclic molecules by free-electron-laser experiments combined with theoretical simulations
Authors: Kukk E, Fukuzawa H, Nagaya K, Niskanen J, Luo Y, Peschel J, Kooser K, Itl E, Pelimanni E, Saito S, You D, Maclot S, Nizou A, Ha DT, Myllynen H, Ueda K
Editors: Ancarani L. U. et al.
Conference name: International Conference on Photonic, Electronic and Atomic Collisions
Publication year: 2020
Journal: Journal of Physics: Conference Series
Book title : 31st International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC XXXI) 23-30 July 2019, Deauville, France
Journal name in source: 31ST INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS (ICPEAC XXXI)
Journal acronym: J PHYS CONF SER
Article number: ARTN 112007
Volume: 1412
First page : 112007
Number of pages: 1
ISSN: 1742-6588
DOI: https://doi.org/10.1088/1742-6596/1412/11/112007
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/49808155
Thiophene is a cyclic molecule that becomes unstable as a molecular dication. We followed the multi-step dissociation dynamics triggered by soft x-ray FEL pulses from SACLA, core-ionizing the S 2p orbital and creating parent dications by the Auger decay. The time-evolution was probed by optical laser pulsesthat reveal the survival lifetime of the parent dication and the build-up of fragmentation proceeding by ring opening and rupture, accompanied by hydrogen ejection and secondary dissociation. Experimental results are compared to statistical analysis of molecular dynamics simulations.
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