Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...269..329h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 269, June 1, 1983, p. 329-333. Research supported by the Science and Engine
Astronomy and Astrophysics
Astrophysics
81
Hydrocarbons, Interstellar Chemistry, Ionic Reactions, Molecular Ions, Helium, Hydrogen, Reaction Kinetics
Scientific paper
Measurements on a variety of three-body association reactions between hydrocarbon ions and molecular hydrogen in the presence of helium have been undertaken. The rate coefficients of most of the systems studied are vanishingly small (less than 1 x 10 to the -30th cm exp 6/s) even at 80 K. The results cast severe doubt on a recent gas-phase model of complex hydrocarbon formation in dense interstellar clouds in which radiative association reactions between hydrocarbon ions and molecular hydrogen play a key role. In addition to the three-body reactions, some two-body reactions between hydrocarbon ions and molecular hydrogen and some reactions between carbon ions (C/+/) and hydrocarbon neutrals have been studied.
Adams Nigel G.
Herbst Eric
Smith Douglas
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