Time Evolution of an Irreversible Recombination Process

摘要

The time evolution of the irreversible catalytic recombination process, A + B -> inert is studied both analytically as well as by computer simulation. A rate equation describing this process is derived. For situations where one of the species poisons the catalyst, the minority species, under certain conditions, is found to decay exponentially. Computer simulation results also indicate exponential decay for intermediate times. Near the poisoning transition, x sub A approx. = x sub B, the average relaxation time is found to diverge as tau approx. (1) (0.5-x sub A) sup gamma with gamma approx. = 1.3. Here x sub A and x sub B are the compositions of A and B in the gas. (author). 6 refs, 4 figs. (Atomindex citation 19:035155)