Ultrafast dynamics in acetylene clocked in a femtosecond XUV stopwatch

Y. H. Jiang, A. Senftleben, M. Kurka, A. Rudenko, L. Foucar, O. Herrwerth, M. F. Kling, M. Lezius, J. V. Tilborg, A. Belkacem, K. Ueda, D. Rolles, R. Treusch, Y. Z. Zhang, Y. F. Liu, C. D. Schröter, J. Ullrich, R. Moshammer

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32 Citations (Scopus)

Abstract

Few-photon induced ultrafast dynamics in acetylene (C2H 2) leading to several dissociation channels - deprotonation (H ++C2H+ and H++C2H 2+), symmetric break-up (CH++CH+) and isomerization (C++CH2+) - were investigated employing the (XUV; extreme ultra-violet)-pump-(XUV; extreme ultra-violet)-probe scheme at the free-electron laser in Hamburg, combined with multi-hit coincidence detection. The kinetic energy releases and fragment-ion momentum distributions for various decay channels are presented. The C ++CH2+ and H++C2H 2+ channels reveal clear signatures of ultrafast molecular mechanisms, demonstrating potential applications of our pump-probe technique to complex systems in order to study a large variety of ultrafast phenomena in the XUV regime.

Original languageEnglish
Article number164027
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume46
Issue number16
DOIs
Publication statusPublished - 2013 Aug 28

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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