Radiative Association of Atomic and Ionic Carbon
| Autor: | R. T. Smyth, James Babb, Brendan M. McLaughlin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences Atomic Physics (physics.atom-ph) Ionic bonding FOS: Physical sciences Astronomy and Astrophysics Coupling (probability) 01 natural sciences 7. Clean energy Potential energy Physics - Atomic Physics Ion Dipole Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY 0103 physical sciences Atom Radiative transfer Molecule Atomic physics 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) 0105 earth and related environmental sciences |
| Zdroj: | Babb, J F, Smyth, R T & McLaughlin, B M 2019, ' Radiative Association of Atomic and Ionic Carbon ', The Astrophysical Journal, vol. 884, no. 2, 155 . https://doi.org/10.3847/1538-4357/ab43cb |
| DOI: | 10.3847/1538-4357/ab43cb |
| Popis: | We present calculated cross sections and rate coefficients for the formation of the dicarbon cation (C$_2^+$) by the radiative association process in collisions of a C$(^3P)$ atom and a C$^+(^2P^o)$ ion. Molecular structure calculations for a number of low-lying doublet and quartet states of C$_2^+$ are used to obtain the potential energy surfaces and transition dipole moments coupling the states of interest, substantially increasing the available molecular data for C$_2^+$. Using a quantum-mechanical method, we explore a number of allowed transitions and determine those contributing to the radiative association process. The calculations extend the available data for this process down to the temperature of 100 K, where the rate coefficient is found to be about $2\times 10^{-18}$ cm$^3$/s. We provide analytical fits suitable for incorporation into astrochemical reaction databases. Comment: Accepted for publication ApJ |
| Databáze: | OpenAIRE |
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