Abstract

The time-dependence of reversible diffusion-controlled reactions in a binary suspension of equal-sized spheres is studied on the basis of the time-correlation matrix of concentration fluctuations in thermal equilibrium. The transient effects are calculated in an Enskog-type approximation from the nonequilibrium distribution function of a pair of diffusing and mutating spheres. The equilibrium radial distribution functions of the system are assumed to be sufficiently well known. The calculation yields predictions of the time-correlation matrix of concentration fluctuations, which can be compared with computer simulations of the model system.

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