REACTIONS FORMING C, C n = 2, 4H(0, +), AND C3H IN THE GAS PHASE: SEMIEMPIRICAL BRANCHING RATIOS
作者： A. Jallat , M. Chabot , P. Gratier , K. Béroff , Valentine Wakelam
DOI: 10.1088/0004-637X/771/2/90
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摘要: The aim of this paper is to provide a new set branching ratios (BRs) for interstellar and planetary chemical networks based on semiempirical model. We applied, instead zero-order theory (i.e., only the most exoergic decaying channel considered), statistical microcanonical model construction breakdown curves using experimental high velocity collision BRs their parameterization. applied ion-molecule, neutral-neutral, ion-pair reactions implemented in few popular databases astrochemistry, such as KIDA, OSU, UMIST. studied carbon hydrocarbon species with electrons, He+, H+, CH+, CH, C, C+ leading intermediate complexes type C n = 2, 10, 4H, C3H2, 4H+, or C3H. Comparison predictions measurements supports validity Huge deviations respect database values are often obtained. Effects time-dependent chemistry dark clouds photodissociation region conditions similar those found Horsehead Nebula discussed.
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