Rotational energy relaxation in CH4 and CH4-He,Ar collisions calculated from coherent and stimulated Raman spectroscopy data |
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| Authors: | MIKHAIL L STREKALOV |
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| Institution: | Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences , 630090, Novosibirsk, Russia |
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| Abstract: | Theoretical treatment of the evolution of the methane Q branch contour with pressure is given in the framework of a quantum model of rotational relaxation with allowance for the tetra-hedral symmetry of rotational levels. The results obtained are compared in detail with available experimental data. As a result, rotational energy relaxation cross-sections for methane and its mixtures with helium and argon have been determined. |
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