Quantum mechanical study of the high-temperature H+ + HD → D+ + H2 reaction for the primordial universe chemistry - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2019

Quantum mechanical study of the high-temperature H+ + HD → D+ + H2 reaction for the primordial universe chemistry

Grégoire Guillon
  • Fonction : Auteur
Pascal Honvault

Résumé

ABSTRACT We use the time-independent quantum-mechanical formulation of reactive collisions in order to investigate the state-to-state H+ + HD → D+ + H2 chemical reaction. We compute cross-sections for collision energies up to 1.8 eV and rate coefficients for temperatures up to 10 000 K. We consider HD in the lowest vibrational level v = 0 and rotational levels j = 0–6, and H2 in vibrational levels v′ = 0–3 and rotational levels j′ = 0–9. For temperatures below 4000 K, the rate coefficients strongly vary with the initial rotational level j, depending on whether the reaction is endothermic (j ≤ 2) or exothermic (j ≥ 3). The reaction is also found less and less probable as the final vibrational quantum number v′ increases. Our results illustrate the importance of studying state-to-state reactions, in the context of the chemistry of the primordial universe.

Dates et versions

hal-04121834 , version 1 (08-06-2023)

Identifiants

Citer

Maxence Lepers, Grégoire Guillon, Pascal Honvault. Quantum mechanical study of the high-temperature H+ + HD → D+ + H2 reaction for the primordial universe chemistry. Monthly Notices of the Royal Astronomical Society, 2019, 488 (4), pp.4732-4739. ⟨10.1093/mnras/stz1797⟩. ⟨hal-04121834⟩
5 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More