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  • Novotny, O., et al. (author)
  • DISSOCIATIVE RECOMBINATION MEASUREMENTS OF HCl+ USING AN ION STORAGE RING
  • 2013
  • In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 777:1, s. 54-
  • Journal article (peer-reviewed)abstract
    • We have measured dissociative recombination (DR) of HCl+ with electrons using a merged beams configuration at the TSR heavy-ion storage ring located at the Max Planck Institute for Nuclear Physics in Heidelberg, Germany. We present the measured absolute merged beams recombination rate coefficient for collision energies from 0 to 4.5 eV. We have also developed a new method for deriving the cross section from the measurements. Our approach does not suffer from approximations made by previously used methods. The cross section was transformed to a plasma rate coefficient for the electron temperature range from T = 10 to 5000 K. We show that the previously used HCl+ DR data underestimate the plasma rate coefficient by a factor of 1.5 at T = 10 K and overestimate it by a factor of three at T = 300 K. We also find that the new data may partly explain existing discrepancies between observed abundances of chlorine-bearing molecules and their astrochemical models.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Wolf, A. (1)
Yang, B (1)
Becker, A. (1)
Geppert, Wolf D. (1)
Schwalm, D. (1)
Novotny, O. (1)
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Savin, D. W. (1)
Grieser, M. (1)
Repnow, R. (1)
Krantz, C (1)
Buhr, H. (1)
Domesle, C. (1)
Kreckel, H. (1)
Spruck, K. (1)
Stuetzel, J. (1)
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University
Stockholm University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2013 (1)

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