We report an electron paramagnetic resonance (EPR) study of gamma rays irradiation effects on an oxygen-deficient silica obtained from fused quartz. We have found that three types of E' centers, E'(x), E'(gamma) and E'(delta), and a paramagnetic defect in a spin triplet state (S = 1) are induced. The EPR signals dependence on the microwave power have been investigated. The concentrations of these centers as a function of gamma ray irradiation show that for high dose a limit value is reached suggesting a generation process from precursors.
|Numero di pagine||4|
|Rivista||Journal of Non-Crystalline Solids|
|Stato di pubblicazione||Published - 2005|
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