DYNAMIC PARTICLE AGGREGATION IN THE BIMOLECULAR A+B-]0 REACTION

The effect of an elastic (U = -lambda/r3) interaction between similar particles on the kinetics of the bimolecular A + B --> 0 reaction is studied for the first time in terms of a novel formalism of the many-point particle densities taking into account the spatial correlations of both similar and dissimilar particles. It is shown that an elastic attraction results in the dynamic aggregation of similar particles and therefore in the reduced reaction rate unusual for the standard chemical kinetics. The distinctive time of such aggregate formation depends on the initial particle concentration and on their spatial distribution but is always considerably shorter than that for statistical aggregation of similar noninteracting particles. The latter is a distinctive feature of the self-organization in bimolecular reactions at long times and/or great particle concentrations. For the same value of the interaction parameter lambda an attraction of similar particles has a greater impact on the reaction kinetics than that of dissimilar particles.