DIFFUSION-CONTROLLED CHEMICAL-REACTIONS MODELED BY CONTINUOUS-TIME RANDOM-WALKS

In the kinetic theory of pseudo-first-order diffusion-controlled chemical reactions, the diffusion motion of one component can be suppressed as long as the relative diffusion coefficient is assigned to the other component. The continuous-time-random-walk (CTWR) treatment of the pseudo-first-order reactions reaffirmed this well-known notion in the case of an exponential jump time distribution. In the case of a long-tail jump time distribution of Scher-Montroll, the decay dynamics depends upon which component is assigned the role of random walker, especially at low survival fractions. © 1979 American Institute of Physics.