Abstract
Electron scavenging reactions in amorphous media are analyzed using a random walk hopping model, which can yield a time dependent rate constant. The underlying waiting time distribution for the time between hops is shown to be able to lead to an exponential of a fractional power of time decay of the reactants, as opposed to simple exponential decay. This type of kinetic behavior has been found by Hamill and Funabashi when replotting electron scavenging data in an appropriate manner. A different waiting time distribution which has been used for the analysis of charge transfer in amorphous xerographic films is shown to lead to an algebraic decay law, as has been observed in various phosphors.
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