Unimolecular diffusion-mediated reactions with a nonrandom time-modulated absorbing barrier.

Autor: Bashford, D., Weaver, D. L.
Předmět:
Zdroj: Journal of Chemical Physics; 3/1/1986, Vol. 84 Issue 5, p2587, 6p
Abstrakt: A diffusion-reaction model with time-dependent reactivity is formulated and applied to unimolecular reactions. The model is solved exactly numerically and approximately analytically for the unreacted fraction as a function of time. It is shown that the approximate analytical solution is valid even when the system is far from equilibrium, and when the reactivity probability is more complicated than a square-wave function of time. A discussion is also given of an approach to problems of this type using a stochastically fluctuating reactivity, and the first-passage time for a particular example is derived. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index