Growth of paramagnetic defects by gamma rays irradiation in oxygen-deficient silica

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Abstract

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.
Lingua originaleEnglish
pagine (da-a)1787-1790
Numero di pagine4
RivistaJournal of Non-Crystalline Solids
Volume351
Stato di pubblicazionePublished - 2005

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.2500.2503???
  • ???subjectarea.asjc.3100.3104???
  • ???subjectarea.asjc.2500.2505???

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