Abstract
The statistical approximation is discussed for the theory of bimolecular endothermic reactions on the assumption that the products are produced by decomposition of a complex whose lifetime is substantially greater than the characteristic times of intramolecular motions. The reaction cross-sections are expressed in terms of the capture cross-sections for the initial molecules and of the decomposition probability for the complex, which is proportional to the flux in the given reaction path. The latter two quantities are related only via two integrals of motion (for the total energy and total angular momentum of the system). Cross-sections are deduced for endothermic ion-molecule reactions near threshold.
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Nikitin, E. Statistical theory of endothermic reactions. Theor Exp Chem 1, 83–89 (1965). https://doi.org/10.1007/BF00945564
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DOI: https://doi.org/10.1007/BF00945564