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Dissociative recomb...
Dissociative recombination of nitrile ions : DCCCN+ and DCCCND
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Geppert, W D (author)
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Ehlerding, A (author)
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Hellberg, F (author)
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Semaniak, J (author)
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- Österdahl, Fabian (author)
- KTH,Fysik
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Kaminska, M (author)
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Al-Khalili, A (author)
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Zhaunerchyk, V (author)
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Thomas, R (author)
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Af Ugglas, M (author)
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Kallberg, A (author)
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Simonsson, A (author)
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Larsson, M (author)
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(creator_code:org_t)
- American Astronomical Society, 2004
- 2004
- English.
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In: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 613:2, s. 1302-1309
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Branching ratios and absolute cross sections have been measured for the dissociative recombination of DCCCN+ and DCCCND+ using the CRYRING ion storage ring. In the case of DCCCN+ the dissociation yielding D + C3N and those leading to two fragments containing a pair of heavy atoms dominate, whereas pathways producing a fragment with three heavy atoms play only a minor role. Conversely, for DCCCND+, only those channels preserving the carbon chain or producing two fragments with a pair of heavy atoms each are detected. The cross sections of the reactions are very similar and can be fitted to the expressions sigma = (2.9 +/- 0.5) x 10(-15)E(eV)(-1.05 +/- 0.02) cm(2) and sigma = (2.3 +/- 0.4) x 10(-15)E(eV)(-1.10 +/- 0.02) cm(2) for DCCCN+ and DCCCND+, respectively. From these data, thermal reaction rates of k(T) = (1.5 +/- 0.3) x 10(-6)(T/300 K)(-0.60 +/- 0.02) cm(3) s(-1) and k(T) = (1.5 +/- 0.3) x 10(-6)(T/300 K)(-0.58 +/- 0.02) cm(3) s(-1) were calculated for DCCCN+ and DCCCND+, respectively. These rates and branching ratios are compared with those hitherto used in astrophysical models.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- astrochemistry
- methods : laboratory
- molecular data
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Geppert, W D
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Ehlerding, A
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Hellberg, F
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Semaniak, J
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Österdahl, Fabia ...
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Kaminska, M
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show more...
-
Al-Khalili, A
-
Zhaunerchyk, V
-
Thomas, R
-
Af Ugglas, M
-
Kallberg, A
-
Simonsson, A
-
Larsson, M
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Astrophysical Jo ...
- By the university
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Royal Institute of Technology