Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...329l.121a&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 329, June 15, 1988, p. L121-L124.
Astronomy and Astrophysics
Astrophysics
63
Hydrogen Ions, Infrared Spectra, Molecular Clouds, Molecular Ions, Reaction Kinetics, Recombination Reactions, Chemical Evolution, Electron Energy, Electrostatic Probes, Interstellar Matter
Scientific paper
The dissociative rate constant for H3(+) occupies a key role in model calculations of the interstellar chemical evolution. The decay of an infrared absorption signal of H3(+) was measured as a function of time, and the decay curve was analyzed and found to fit very well to the form expected for a recombination decay. The signal decay is attributed to the dissociative recombination with electrons, and the rate constant was determined to be (1./8 + or - 0.2) x 10 to the -7th cu cm/s, which disagrees with the recent value obtained with the flowing afterglow/Langmuir probe technique.
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