Dissociative recombination of nitrile ions with implications for Titan's upper atmosphere
2012 (English)In: Planetary and Space Science, ISSN 0032-0633, E-ISSN 1873-5088, Vol. 60, no 1, 102-106 p.Article in journal (Refereed) Published
Nitrile ions are abundant in Titan's upper atmosphere and are expected to be lost mainly via dissociative recombination with free electrons. We review in this paper a series of experimental results on the dissociative recombination reactions of nitrile ions known/expected to be present in Titan's upper atmosphere. The experiments were all performed at the heavy ion storage ring CRYRING in Stockholm, Sweden, and the results presented here include information on rate coefficients at electron temperatures relevant for Titan's upper atmosphere as well as information on the product branching fractions of the reactions. We discuss implications of the results for Titan's atmosphere. As an example the presented results support a statement by Krasnopolsky (2009) that nitriles do not degrade to yield N-2 again in Titan's atmosphere, indicating that condensation and polymerization with precipitation to the surface are their ultimate fate.
Place, publisher, year, edition, pages
2012. Vol. 60, no 1, 102-106 p.
IdentifiersURN: urn:nbn:se:su:diva-76767DOI: 10.1016/j.pss.2011.03.001ISI: 000300483200012OAI: oai:DiVA.org:su-76767DiVA: diva2:527121
Titan Through Time: A Workshop on Titan’s Formation, Evolution and Fate, NASA Goddard Space Flight Center, Maryland, USA, 6–8 April 2010