Reactions Forming C_{n=2,10}^{(0,+)}, C n = 2, 4H(0, +), and C3H_2^{(0,+)} in the Gas Phase: Semiempirical Branching Ratios
| hal.structure.identifier | Institut de Physique Nucléaire d'Orsay [IPNO] | |
| dc.contributor.author | CHABOT, M. | |
| hal.structure.identifier | Institut des Sciences Moléculaires d'Orsay [ISMO] | |
| dc.contributor.author | BÉROFF, K. | |
| hal.structure.identifier | Institut de RadioAstronomie Millimétrique [IRAM] | |
| dc.contributor.author | GRATIER, P. | |
| dc.contributor.author | JALLAT, A. | |
| hal.structure.identifier | AMOR 2013 | |
| dc.contributor.author | WAKELAM, Valentine | |
| dc.date.issued | 2013-07 | |
| dc.identifier.issn | 0004-637X | |
| dc.description.abstractEn | The aim of this paper is to provide a new set of branching ratios (BRs) for interstellar and planetary chemical networks based on a semiempirical model. We applied, instead of zero-order theory (i.e., only the most exoergic decaying channel is considered), a statistical microcanonical model based on the construction of breakdown curves and using experimental high velocity collision BRs for their parameterization. We applied the model to ion-molecule, neutral-neutral, and ion-pair reactions implemented in the few popular databases for astrochemistry, such as KIDA, OSU, and UMIST. We studied the reactions of carbon and hydrocarbon species with electrons, He+, H+, CH+, CH, C, and C+ leading to intermediate complexes of the type C n = 2, 10, C n = 2, 4H, C3H2, C_{n=2,10}^+, C n = 2, 4H+, or C3H_2^+. Comparison of predictions with measurements supports the validity of the model. Huge deviations with respect to database values are often obtained. Effects of the new BRs in time-dependent chemistry for dark clouds and for photodissociation region chemistry with conditions similar to those found in the Horsehead Nebula are discussed. | |
| dc.language.iso | en | |
| dc.publisher | American Astronomical Society | |
| dc.subject.en | astrochemistry | |
| dc.subject.en | astronomical databases: miscellaneous | |
| dc.subject.en | ISM: abundances | |
| dc.subject.en | ISM: molecules | |
| dc.title.en | Reactions Forming C_{n=2,10}^{(0,+)}, C n = 2, 4H(0, +), and C3H_2^{(0,+)} in the Gas Phase: Semiempirical Branching Ratios | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1088/0004-637X/771/2/90 | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR] | |
| dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR] | |
| dc.identifier.arxiv | 1307.0620 | |
| bordeaux.journal | The Astrophysical Journal | |
| bordeaux.page | 90 | |
| bordeaux.volume | 771 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00838368 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00838368v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Astrophysical%20Journal&rft.date=2013-07&rft.volume=771&rft.spage=90&rft.epage=90&rft.eissn=0004-637X&rft.issn=0004-637X&rft.au=CHABOT,%20M.&B%C3%89ROFF,%20K.&GRATIER,%20P.&JALLAT,%20A.&WAKELAM,%20Valentine&rft.genre=article |
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