Abstract
Photo-induced ESR and its annealing behavior in melt-quenched GeSx (x=1.5, 0.8 and 2) glasses have been studied. Measurement of the effect of gamma-ray irradiation on the photo-induced ESR reveals the important role of quenched-in dangling bonds in the photo-enhancement of the ESR signal. The isothermal and isochronal annealing behavior of the photo-induced ESR in GeSx (x=1.5, 1.8 and 2) glasses can be explained in terms of a first-order reaction in which a Gaussian distribution of the activation energy is assumed.