Mant, B;
Yurtsever, E;
González-Sánchez, L;
Wester, R;
Gianturco, FA;
(2021)
Vibrational quenching of CN− in collisions with He and Ar.
The Journal of Chemical Physics
, 154
(8)
, Article 084305. 10.1063/5.0039854.
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Abstract
The vibrational quenching cross sections and corresponding low-temperature rate constants for the ν = 1 and ν = 2 states of CN− ( 1Σ + ) colliding with He and Ar atoms have been computed ab initio using new three-dimensional potential energy surfaces. Little work has been carried out so far on low-energy vibrationally inelastic collisions for anions with neutral atoms. The cross sections and rates calculated at energies and temperatures relevant for both ion traps and astrochemical modeling are found by the present calculations to be even smaller than those of the similar C− 2 /He and C− 2 /Ar systems, which are in turn of the order of those existing for the collisions involving neutral diatom–atom systems. The implications of our finding in the present case mainly focus on the possible role of small computed rate constants in the dynamics of molecular cooling and the evolution of astrochemical modeling networks.
| Type: | Article |
|---|---|
| Title: | Vibrational quenching of CN− in collisions with He and Ar |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/5.0039854 |
| Publisher version: | http://doi.org/10.1063/5.0039854 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10123362 |
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