Vigren, E, Hamberg, M, Zhaunerchyk, V et al. (6 more authors) (2009) The Dissociative Recombination of Protonated Acrylonitrile, CH2CHCNH+, with Implications for the Nitrile Chemistry in Dark Molecular Clouds and the Upper Atmosphere of Titan. The Astrophysical Journal, 695 (1). pp. 317-324. ISSN 0004-637X
Abstract
Measurements on the dissociative recombination (DR) of protonated acrylonitrile, CH2CHCNH+, have been performed at the heavy ion storage ring CRYRING located in the Manne Siegbahn Laboratory in Stockholm, Sweden. It has been found that at ~2 meV relative kinetic energy about 50% of the DR events involve only ruptures of X-H bonds (where X = C or N) while the rest leads to the production of a pair of fragments each containing two heavy atoms (alongside H and/or H2). The absolute DR cross section has been investigated for relative kinetic energies ranging from ~1 meV to 1 eV. The thermal rate coefficient has been determined to follow the expression k(T) = 1.78 × 10–6 (T/300) – 0.80 cm3 s–1 for electron temperatures ranging from ~10 to 1000 K. Gas-phase models of the nitrile chemistry in the dark molecular cloud TMC-1 have been run and results are compared with observations. Also, implications of the present results for the nitrile chemistry of Titan's upper atmosphere are discussed.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | ISM: clouds; ISM: molecules; Methods: laboratory; Molecular processes |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Astrophysics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 27 Feb 2023 13:59 |
Last Modified: | 27 Feb 2023 14:00 |
Status: | Published |
Publisher: | The American Astronomical Society |
Identification Number: | 10.1088/0004-637X/695/1/317 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:196825 |