State resolved rotational excitation cross sections and rates in H2+H2 collisions

Abstract

Rotational transitions in molecular hydrogen collisions are computed. The two most recently developed potential energy surfaces for the H2-H2 system are used from the following works: 1) A.I. Boothroyd, P.G. Martin, W.J. Keogh, M.J. Peterson, J. Chem. Phys., 116 (2002) 666, and 2) P. Diep, J.K. Johnson, J. Chem. Phys., 113 (2000) 3480; ibid. 112, 4465. Cross sections for rotational transitions 00->20, 22, 40, 42, 44 and corresponding rate coefficients are calculated using a quantum-mechanical approach. Results are compared for a wide range of kinetic temperatures 300 K < T < 3000 K.

9 pages, 3 figures, 3 tables

References in corpus (2)

• Molecular Hydrogen in Star-forming regions: implementation of its micro-physics in Cloudy
• Molecular Hydrogen Outflows in W51

Cited by in corpus (9)

• Quantum calculations of H2-H2 collisions: from ultracold to thermal energies
• Rotational Energy Transfer in H2+H2
• Low temperature HD + $ortho$-/$para$-H${}_2$ inelastic scattering of astrophysical interest
• Close-coupling calculations of rotational energy transfer in p-H2+HD
• A comparative study of the low energy HD+o-/p-H2 rotational excitation/de-excitation collisions and elastic scattering
• State-resolved rotational cross sections and thermal rate coefficients for ortho-/para-H2+HD at low temperatures and HD+HD elastic scattering
• Ultracold collisions between two light indistinguishable diatomic molecules: elastic and rotational energy transfer in HD+HD
• Quenching of $para$-H${}_2$ with an ultra-cold anti-hydrogen atom ${\bar{H}}_{1s}$
• Parallel computing for 4-atomic molecular dynamics calculations