INFLUENCE OF EXTERNAL STEADY SOURCE STRUCTURE ON PARTICLE DISTRIBUTIONS AND KINETICS OF DIFFUSION-LIMITED REACTIONS .2. A-]0 SIMULATIONS(B)

Monte Carlo simulations were performed to study the effect of a steady external source structure (i.e., particle correlation and vertical re actions) on diffusion-limited A + B-->0 reactions at steady state. Sev eral methods were developed to describe the spatial organization of th e system. They are the distributions of aggregates and inter-particle distance (''pp''), and a parameter based on the number of boundaries b etween A-rich and B-rich domains. The correlation of the particles in the steady external source reduces the local fluctuation in the partic le landing process. The vertical reaction restrains the organization o f particles, and does not allow it to reach total segregation. The deg ree of segregation affects the steady state kinetic behavior. The simu lation results are consistent with existing theoretical predictions fo r the reaction order, the correlation length, and the segregation size .