Search: id:"swepub:oai:gup.ub.gu.se/81531" >
Rotational Transiti...
-
Andersson, Stefan,1973Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry
(author)
Rotational Transitions of CO+ Induced by Atomic Hydrogen
- Article/chapterEnglish2008
Publisher, publication year, extent ...
-
American Astronomical Society,2008
Numbers
-
LIBRIS-ID:oai:gup.ub.gu.se/81531
-
https://gup.ub.gu.se/publication/81531URI
-
https://doi.org/10.1086/587026DOI
Supplementary language notes
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
The CO+ molecular ion has been observed in photon-dominated regions. Recent modeling has not been able to explain the abundances of CO+ in these regions. The most abundant collision partners are believed to be hydrogen atoms, hydrogen molecules, and electrons. The reactions of these species with CO+ have been studied previously and found to be fast. The only inelastic processes studied before were collisions of CO+ with electrons. Here we investigate the inelastic collisions of CO+ with hydrogen atoms. We argue that this can be done on the lowest triplet electronic state. This implies that CO+ ions, in a hydrogen atom dominated surrounding, experiences a few inelastic collisions before reacting. Rotationally inelastic state-to-state cross sections ( ) are presented together with state-resolved thermal rate coefficients. The results suggest that the rotationally inelastic collision cross sections can be of comparable magnitude to the reactive ones. Implications for the rotational temperature of CO+ in PDRs are discussed. To perform the calculations, a potential energy surface is fitted using the reproducing-kernel Hilbert space method based on multireference configuration-interaction calculations employing the aug-cc-pVQZ basis set.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Barinovs, Girts
(author)
-
Nyman, Gunnar,1957Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry(Swepub:gu)xnymgu
(author)
-
Göteborgs universitetInstitutionen för kemi
(creator_code:org_t)
Related titles
-
In:The Astrophysical Journal: American Astronomical Society678, s. 1042-10480004-637X1538-4357
Internet link
Find in a library
To the university's database