Rotational transitions in molecular hydrogen collisions are computed. The two most recently developed potential energy surfaces for the H 2 −H 2 system are used from the following works: 1) A. 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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