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Título
Dynamics of HeHHe+ Rotational State Changes Induced by Collision with He: A Possible New Path in Early Universe Chemistry
Autor(es)
Materia
Collisions
Energy
Kinetic parameters
Cations
Molecules
Fecha de publicación
2021
Citación
L. González-Sánchez, E. Yurtsever, R. Wester, and F. A. Gianturco The Journal of Physical Chemistry A 2021 125 (17), 3748-3759 DOI: 10.1021/acs.jpca.1c01820
Resumen
[EN]Ab initio calculations are employed to generate the rigid rotor (RR) potential energy surface (PES) describing the interaction of the linear molecular cation HeHHe+, at its equilibrium geometry, with the neutral He atom. The resulting interaction is employed to investigate the efficiency of rotational state-changing collisions at the temperatures relevant to the early universe conditions, where the latter molecule has been postulated to exist, albeit not yet observed. The inelastic rate coefficients are found to be fairly large and are compared with those found for another important cation just recently observed in the interstellar medium: the HeH+ polar molecule. The possibility for this cation to provide new options to energy dissipation routes under early universe conditions after the recombination era is briefly discussed.
URI
ISSN
1089-5639
DOI
10.1021/acs.jpca.1c01820
Versión del editor
Colecciones
- GIDM. Artículos [6]