Electron spin resonance methods were used to study the capture kinetics of randomly walking Ag+ ions by radiation-induced traps in a P2O5-37.2Na2O-12.8CaO glass. The dependence of the trap decay law upon the concentration of walkers in the glass was analyzed. It was established that the flux of ions into each trap was the same as in the case of normal diffusion, with a mean-square displacement law for the walkers. The law held for distances ranging from 0.5 to 10nm, at least. The diffusion coefficient varied over a fairly wide range, depending upon the trap location; leading to spatial fluctuations in the diffusion coefficient.

V.M.Syutkin, V.A.Tolkatchev, A.V.Dmitryuk, S.E.Paramzina: Chemical Physics, 1995, 196[1-2], 139-47