Rotational State-to-State Rate Coefficients of HeHNe plus by Collision with He at Low Temperatures

Denis-Alpizar, Otoniel; Cabrera-Gonzalez, Lisan David; Orellana-Gonzalez, Gustavo; Paez-Hernandez, Dayan


The HeHNe+ molecule is expected to have, after NeH+ , the strongest neon bond found so far. Furthermore, formation mechanisms in the interstellar medium (ISM) have been proposed for this molecule. If HeHNe+ is detected, the collisional rate coefficients of this species with the most abundant constituents of the ISM will be critical for employing nonlocal thermodynamic equilibrium (non-LTE) models. Therefore, the main goals of this work are to study the interaction of HeHNe+ with He and to report a set of rotational rate coefficients for this collision at low temperatures. For this purpose, the first potential energy surface for the HeHNe+ + He complex is developed from ab initio calculations. The close-coupling method is employed for studying the dynamics of the system. A |Delta j| = 2 propensity rule is found for transitions starting from the rotational state j = 5. Finally, the rate coefficients for the lower 20 rotational states of HeHNe+ are reported.

Más información

Título según WOS: ID WOS:000908816300001 Not found in local WOS DB
Título de la Revista: ACS Earth and Space Chemistry
Fecha de publicación: 2023


Notas: ISI