% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Reinwardt:588803,
      author       = {Reinwardt, Simon and Baev, Ivan and Cieslik, Patrick and
                      Baev, Karolin and Buhr, Ticia and Perry-Sassmannshausen,
                      Alexander and Schippers, Stefan and Mueller, Alfred and
                      Trinter, Florian and Viefhaus, Jens and Martins, Michael},
      title        = {{S}oft {X}-{R}ay-induced {D}imerization of {M}ethane},
      journal      = {The astrophysical journal / 1},
      volume       = {952},
      number       = {1},
      issn         = {0004-637X},
      address      = {London},
      publisher    = {Institute of Physics Publ.},
      reportid     = {PUBDB-2023-04960},
      pages        = {39},
      year         = {2023},
      note         = {Open Access},
      abstract     = {Carbon 1s excitation of methane, CH4, has been studied in
                      the gas phase using the ion trap integrated with the
                      photon–ion instrument at PETRA III/DESY and soft X-rays
                      from the beamline P04. The created photoions are stored
                      within the ion trap so that in further steps the photoions
                      can undergo reactions with neutral methane molecules. The
                      ionic photoproducts as well as reaction products created
                      thereby are mass-over-charge analyzed by an ion
                      time-of-flight spectrometer. Besides the photoions, product
                      ions with up to three carbon atoms are found. In contrast to
                      experiments using vacuum ultraviolet radiation, especially
                      highly reactive product ions with a small number of hydrogen
                      atoms such as ${{\rm{C}}}_{2}{{\rm{H}}}_{2}^{+}$ and
                      ${{\rm{C}}}_{2}{{\rm{H}}}_{3}^{+}$ are found, which are
                      important precursors for larger hydrocarbons such as C6H6.
                      Possible production routes of the product ions are analyzed
                      on the basis of a model that considers the probabilities for
                      photofragmentation and the first subsequent chemical
                      reaction step. The model indicates that the high degree of
                      fragmentation by photons with energies around 280 eV is
                      favoring these products. The results of the measurements
                      show that the products like
                      ${{\rm{C}}}_{2}{{\rm{H}}}_{2}^{+}$ and
                      ${{\rm{C}}}_{2}{{\rm{H}}}_{3}^{+}$ can be generated by a
                      single collision of the ionization product with neutral
                      methane. The results suggest that soft X-rays might be
                      important for chemical reactions in planetary atmospheres,
                      which has usually not been taken into account. However, due
                      to the high degree of fragmentation and large cross sections
                      involved, they can have a large influence even when the
                      corresponding photon flux is rather small.},
      cin          = {DOOR ; HAS-User / UNI/EXP / FS-PETRA-S},
      ddc          = {520},
      cid          = {I:(DE-H253)HAS-User-20120731 /
                      $I:(DE-H253)UNI_EXP-20120731$ /
                      I:(DE-H253)FS-PETRA-S-20210408},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631) / 6G3 - PETRA III (DESY) (POF4-6G3) / DFG project
                      170620586 - SFB 925: Licht-induzierte Dynamik und Kontrolle
                      korrelierter Quantensysteme (170620586) / DFG project
                      245652604 - Photo-induzierte Prozesse endohedraler
                      Fulleren-Ionen: Experiment (245652604) / DFG project
                      389115454 - K-Schalen-Photoionisation negativ geladener
                      atomarer Ionen (389115454) / DFG project 510114039 -
                      Dissoziationsdynamik von rumpfniveauangeregten ionischen,
                      molekularen Radikalen (510114039)},
      pid          = {G:(DE-HGF)POF4-631 / G:(DE-HGF)POF4-6G3 /
                      G:(GEPRIS)170620586 / G:(GEPRIS)245652604 /
                      G:(GEPRIS)389115454 / G:(GEPRIS)510114039},
      experiment   = {EXP:(DE-H253)P-P04-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001031344400001},
      doi          = {10.3847/1538-4357/acd937},
      url          = {https://bib-pubdb1.desy.de/record/588803},
}