Stochastic calculations of the fast decay of the hydrated electron in the presence of scavengers—tests of model consistency

An excellent test of the efficacy of computer codes simulating the nanosecond diffusion and interaction of radiation-produced radicals is their ability to predict a broad range of data—for example time-dependent yields with and without scavengers. Using a Monte-Carlo transport code for the radiation-production of radicals in liquid water, together with a stochastic calculation of their interaction and decay, we investigate this point. Consistent use of these techniques yields, without adjustable parameters, the shape and absolute magnitude of the time decay of the hydrated electron in pure water, and also the measured time decay in the presence of both hydroxyl and hydrogen ion scavengers.