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

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

2005-12-11

arxiv.org/abs/physics/0512093v1

Physics

Chemical Physics

9 pages, 3 figures, 3 tables

Scientific paper

10.1016/j.chemphys.2006.03.038

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.

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