Rotational relaxation of AlO+(1Σ+) in collision with He

Denis-Alpizar O.; Trabelsi T.; Hochlaf M.; Stoecklin T.

dc.contributor.author	Denis-Alpizar O.
dc.contributor.author	Trabelsi T.
dc.contributor.author	Hochlaf M.
dc.contributor.author	Stoecklin T.
dc.date.accessioned	2020-09-02T22:16:17Z
dc.date.available	2020-09-02T22:16:17Z
dc.date.issued	2018
dc.identifier	10.1093/mnras/stx3182
dc.identifier.citation	475, 1, 783-787
dc.identifier.issn	00358711
dc.identifier.uri	https://hdl.handle.net/20.500.12728/4263
dc.description	The rate coefficients for the rotational de-excitation of AlO+ by collisions with He are determined. The possible production mechanisms of the AlO+ ion in both diffuse and dense molecular clouds are first discussed. A set of ab initio interaction energies is computed at the CCSD(T)-F12 level of theory, and a three-dimensional analytical model of the potential energy surface is obtained using a linear combination of reproducing kernel Hilbert space polynomials together with an analytical long range potential. The nuclear spin free closecoupling equations are solved and the de-excitation rotational rate coefficients for the lower 15 rotational states of AlO+ are reported. A propensity rule to favour Δj = -1 transitions is obtained while the hyperfine resolved state-to-state rate coefficients are also discussed. © 2017 The Author(s).
dc.language.iso	en
dc.publisher	Oxford University Press
dc.subject	Astrochemistry
dc.subject	ISM: molecules
dc.subject	Molecular data
dc.subject	Molecular processes
dc.subject	Scattering
dc.title	Rotational relaxation of AlO+(1Σ+) in collision with He
dc.type	Article