Astrochemistry in an Ion Storage Ring
Storage ring studies of low energy electron collisions with molecular ions have been carried out for dissociative recombination (DR) of fluorine-bearing molecules. Here we report on work aiming to improve the understanding of astrochemistry involving HF, a possible spectroscopic tracer of interstell...
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| creator | Novotny, Oldrich Berg, M. H. Buhr, H. Froese, M. Geppert, W. Grieser, M. Grussie, F. Hamberg, M. Krantz, C. Lestinsky, M. Mendes, M. Nordhorn, C. Novotny, S. Orlov, D. A. Petrignani, A. Shornikov, A. Stutzel, J. Schwalm, D. Savin, Daniel Wolf Wolf, A. |
| description | Storage ring studies of low energy electron collisions with molecular ions have been carried out for dissociative recombination (DR) of fluorine-bearing molecules. Here we report on work aiming to improve the understanding of astrochemistry involving HF, a possible spectroscopic tracer of interstellar H2. For CF+ the rate coefficient was obtained for temperatures down to 10 K. For D2F+ the DR fragmentation branching ratios were determined to be 66(3)%, 24(2)%, and 10(2)% for the F+D+D, DF+D, and D2+F channels, respectively. The molecular DR products of this reaction, DF and D2, display an unusually high level of internal excitation, close to their dissociation limit. |
| doi_str_mv | 10.7916/d84x5jnm |
| format | Report |
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A. ; Petrignani, A. ; Shornikov, A. ; Stutzel, J. ; Schwalm, D. ; Savin, Daniel Wolf ; Wolf, A.</creator><creatorcontrib>Novotny, Oldrich ; Berg, M. H. ; Buhr, H. ; Froese, M. ; Geppert, W. ; Grieser, M. ; Grussie, F. ; Hamberg, M. ; Krantz, C. ; Lestinsky, M. ; Mendes, M. ; Nordhorn, C. ; Novotny, S. ; Orlov, D. A. ; Petrignani, A. ; Shornikov, A. ; Stutzel, J. ; Schwalm, D. ; Savin, Daniel Wolf ; Wolf, A.</creatorcontrib><description>Storage ring studies of low energy electron collisions with molecular ions have been carried out for dissociative recombination (DR) of fluorine-bearing molecules. Here we report on work aiming to improve the understanding of astrochemistry involving HF, a possible spectroscopic tracer of interstellar H2. For CF+ the rate coefficient was obtained for temperatures down to 10 K. For D2F+ the DR fragmentation branching ratios were determined to be 66(3)%, 24(2)%, and 10(2)% for the F+D+D, DF+D, and D2+F channels, respectively. The molecular DR products of this reaction, DF and D2, display an unusually high level of internal excitation, close to their dissociation limit.</description><identifier>ISSN: 1742-6588</identifier><identifier>DOI: 10.7916/d84x5jnm</identifier><language>eng</language><publisher>Columbia University</publisher><subject>Astrophysics ; Physics ; Plasma (Ionized gases)</subject><creationdate>2017</creationdate><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>780,784,1894,4490,27925</link.rule.ids><linktorsrc>$$Uhttps://commons.datacite.org/doi.org/10.7916/d84x5jnm$$EView_record_in_DataCite.org$$FView_record_in_$$GDataCite.org</linktorsrc></links><search><creatorcontrib>Novotny, Oldrich</creatorcontrib><creatorcontrib>Berg, M. 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The molecular DR products of this reaction, DF and D2, display an unusually high level of internal excitation, close to their dissociation limit.</description><subject>Astrophysics</subject><subject>Physics</subject><subject>Plasma (Ionized gases)</subject><issn>1742-6588</issn><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>2017</creationdate><recordtype>report</recordtype><sourceid>PQ8</sourceid><recordid>eNpjYBAwNNAztzQ000-xMKkwzcrLZWHgNDQ3MdI1M7Ww4GDgKi7OMjAwBgJzTgZVx-KSovzkjNTcTCCjUiEzTyExT8EzP08huCS_KDE9VSEoMy-dh4E1LTGnOJUXSnMzaLi5hjh76KYkliQmZ5akxhcUZeYmFlXGGxrEg6yOh1ltTIJSAH7qNpU</recordid><startdate>20170627</startdate><enddate>20170627</enddate><creator>Novotny, Oldrich</creator><creator>Berg, M. 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A.</au><au>Petrignani, A.</au><au>Shornikov, A.</au><au>Stutzel, J.</au><au>Schwalm, D.</au><au>Savin, Daniel Wolf</au><au>Wolf, A.</au><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>Astrochemistry in an Ion Storage Ring</btitle><date>2017-06-27</date><risdate>2017</risdate><issn>1742-6588</issn><abstract>Storage ring studies of low energy electron collisions with molecular ions have been carried out for dissociative recombination (DR) of fluorine-bearing molecules. Here we report on work aiming to improve the understanding of astrochemistry involving HF, a possible spectroscopic tracer of interstellar H2. For CF+ the rate coefficient was obtained for temperatures down to 10 K. For D2F+ the DR fragmentation branching ratios were determined to be 66(3)%, 24(2)%, and 10(2)% for the F+D+D, DF+D, and D2+F channels, respectively. The molecular DR products of this reaction, DF and D2, display an unusually high level of internal excitation, close to their dissociation limit.</abstract><pub>Columbia University</pub><doi>10.7916/d84x5jnm</doi></addata></record> |
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| subjects | Astrophysics Physics Plasma (Ionized gases) |
| title | Astrochemistry in an Ion Storage Ring |
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