H3+: the initiator of interstellar chemistry

Details H3+: the initiator of interstellar chemistry H3+: the initiator of interstellar chemistry

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ijasb...7..237l&link_type=abstract

International Journal of Astrobiology, Volume 7, p. 237-241

Biology

Dissociative Recombination, Interstellar Chemistry, Cosmic Ray, Ionization Rate

Scientific paper

Second only to H2, protonated molecular hydrogen, H3+, is the most abundantly produced interstellar molecule. Owing to its high reactivity and acidity, it plays the pivotal role in initiating interstellar chemical reactions, something which also reduces its steady-state concentration. Interstellar H3+ is not only destroyed in chemical reactions but also in dissociative recombination with electrons. The rate constant and mechanism of recombination have long been controversial, but great advances have been made during recent years, with the important consequence that the cosmic ray ionization rate in diffuse clouds is now believed to be higher by an order of magnitude than previously assumed.

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