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Published on: September 2, 2016
Inertial dynamic effects on diffusion-influenced reactions: Approach based on the diffusive Cattaneo system
Sangyoub Lee1, Sergey D Traytak1
1Department of Chemistry, Seoul National University, Seoul 08826, South Korea and N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 4 Kosygina St., 119991 Moscow, Russian Federation.
Abstract:
We investigate the inertial dynamic effects on the kinetics of diffusion-influenced reactions by solving the linear diffusive Cattaneo system with the reaction sink term. Previous analytical studies on the inertial dynamic effects were limited to the bulk recombination reaction with infinite intrinsic reactivity. In the present work, we investigate the combined effects of inertial dynamics and finite reactivity on both bulk and geminate recombination rates. We obtain explicit analytical expressions for the rates, which show that both bulk and geminate recombination rates are retarded appreciably at short times due to the inertial dynamics. In particular, we find a distinctive feature of the inertial dynamic effect on the survival probability of a geminate pair at short times, which can be manifested in experimental observations.
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