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

E. Kukk, H. Fukuzawa, K. Nagaya, J. Niskanen, Y. Luo, J. Peschel, K. Kooser, E. Itl, E. Pelimanni, S. Saito, D. You, S. Maclot, A. Nizou, D. T. Ha, H. Myllynen, K. Ueda

Research output: Contribution to journalConference article

Abstract

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.

Original languageEnglish
Article number112007
JournalJournal of Physics: Conference Series
Volume1412
Issue number11
DOIs
Publication statusPublished - 2020 Jun 11
Event31st International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2019 - Deauville, France
Duration: 2019 Jul 232019 Jul 30

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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