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@ARTICLE{Jahnke:625034,
      author       = {Jahnke, Till and Mai, Sebastian and Bhattacharyya, Surjendu
                      and Chen, Keyu and Boll, Rebecca and Castellani, Maria Elena
                      and Dold, Simon and Duley, Avijit and Frühling, Ulrike and
                      Green, Alice E. and Ilchen, Markus and Ingle, Rebecca and
                      Kastirke, Gregor and Lam, Huynh Van Sa and Lever, Fabiano
                      and Mayer, Dennis and Mazza, Tommaso and Mullins, Terence
                      and Ovcharenko, Yevheniy and Senfftleben, Björn and
                      Trinter, Florian and Noor, Atia Tul and Usenko, Sergey and
                      Venkatachalam, Anbu Selvam and Rudenko, Artem and Rolles,
                      Daniel and Meyer, Michael and Ibrahim, Heide and Gühr,
                      Markus},
      title        = {{X}-ray {C}oulomb explosion imaging reveals role of
                      molecular structure in internal conversion},
      reportid     = {PUBDB-2025-01007, arXiv:2405.15367},
      year         = {2025},
      note         = {19 pages, 8 figures},
      abstract     = {Molecular photoabsorption results in an electronic
                      excitation/ionization which couples to the rearrangement of
                      the nuclei. The resulting intertwined change of nuclear and
                      electronic degrees of freedom determines the conversion of
                      photoenergy into other molecular energy forms. Nucleobases
                      are excellent candidates for studying such dynamics, and
                      great effort has been taken in the past to observe the
                      electronic changes induced by the initial excitation in a
                      time-resolved manner using ultrafast electron spectroscopy.
                      The linked geometrical changes during nucleobase
                      photorelaxation have so far not been observed directly in
                      time-resolved experiments. Here, we present a study on a
                      thionucleobase, where we extract comprehensive information
                      on the molecular rearrangement using Coulomb explosion
                      imaging. Our measurement links the extracted deplanarization
                      of the molecular geometry to the previously studied temporal
                      evolution of the electronic properties of the system. In
                      particular, the protons of the exploded molecule are
                      well-suited messengers carrying rich information on the
                      molecule's geometry at distinct times after the initial
                      electronic excitation. The combination of ultrashort laser
                      pulses to trigger molecular dynamics, intense X-ray
                      free-electron laser pulses for the explosion of the
                      molecule, and multi-particle coincidence detection opens new
                      avenues for time-resolved studies of complex molecules in
                      the gas phase.},
      cin          = {FS-FLASH / $XFEL_E2_SQS$ / FS-FLASH-O},
      cid          = {I:(DE-H253)FS-FLASH-20140814 /
                      $I:(DE-H253)XFEL_E2_SQS-20210408$ /
                      I:(DE-H253)FS-FLASH-O-20160930},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631) / AIM, DFG project G:(GEPRIS)390715994 - EXC
                      2056: CUI: Advanced Imaging of Matter (390715994) / DFG
                      project G:(GEPRIS)509471550 - Dynamik
                      photoionisations-induzierter Prozesse in laser-präparierten
                      Molekülen in der Gasphase und der wässrigen Phase
                      (509471550) / 123-CO - Spying on Ultrafast Structural
                      Changes Through Three Sets of Eyes (101067645)},
      pid          = {G:(DE-HGF)POF4-631 / G:(GEPRIS)390715994 /
                      G:(GEPRIS)509471550 / G:(EU-Grant)101067645},
      experiment   = {EXP:(DE-H253)F-FL24-20150901},
      typ          = {PUB:(DE-HGF)25},
      eprint       = {2405.15367},
      howpublished = {arXiv:2405.15367},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2405.15367;\%\%$},
      url          = {https://bib-pubdb1.desy.de/record/625034},
}