2008/03/31 by Renat A. Sultanov, A. V. Khugaev, Avas V. Khugaev +1
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics and Star Formation Studies #Atmospheric Ozone and Climate #Ionosphere and magnetosphere dynamics #physics.atm-clus #physics.chem-ph
paper · pdf · doi:10.1016/j.cplett.2009.05.021
16 pages, 5 figures, additional results included
arxiv created 2009/01/23 · openalex publication_date 2009/05/14 · arxiv updated 2015/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Results for quantum mechanical calculations of the integral cross sections and corresponding thermal rate coefficients for para-/ortho-H2+HD collisions are presented. Because of significant astrophysical interest in regard to the cooling of primodial gas the low temperature limit of para-/ortho-H2+HD is investigated. Sharp resonances in the rotational state-resolved cross sections have been calculated at low energies. These resonances are important and significantly contribute to the corresponding rotational state-resolved thermal rate coefficients, particularly at low temperatures, that is less than T ∼ 100K. Additionally in this work, the cross sections for the elastic HD+HD collision have also been calculated. We obtained quite satisfactory agreement with the results of other theoretical works and experiments.