Unimolecular Dissociation of H<sup>+</sup><sub style="margin-left:-6px;">2n+1</sub> Hydrogen Clusters: Measured Cross Sections and Theoretically Calculated Rate Constants

Abstract

In this paper, we studied the process of dissociation unimolecular of the evaporation of hydrogen clusters according to size, using the Rice-Ramsperger-Kassel-Marcus (RRKM) theory. The rate constants k(E) were determined with the use of statistical theory of unimolecular reactions using various approximations. In our work, we used the products frequencies instead of transitions frequencies in the calculation of unimolecular dissociation rates obtained by three models RRKM. The agreement between the experimental cross section ratio and calculated rate ratio with direct count approximation seems to be reasonable.