Journal Articles Nuclear Instruments and Methods in Physics Research Year : 2008

Blocking of alkaline migration under ionizing irradiation in Cr-doped oxide glasses

Abstract

Effects of ionizing irradiation on different chromium-doped silicate glass compositions have been studied using EPR and Raman spectroscopies. We observe first reduction processes of Cr3+ and Cr6+ ions correlated with the dose integrated inside the glass. With the doping content in theses glasses, we observe also by EPR spectroscopy a complete blocking of defects production under ionizing radiation for samples doped with more than 1 mol% of Cr2O3. This result is explained by dynamical reversible trapping of the excitons produced during irradiation. Associated to the disappearance of defects produced by irradiation, a decrease of the glass structural changes are also detected by Raman spectroscopy at integrated doses higher than 109 Gy

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Dates and versions

hal-00290774 , version 1 (26-06-2008)

Identifiers

  • HAL Id : hal-00290774 , version 1

Cite

B. Boizot, F.Y. Olivier, G. Petite, D. Ghaleb. Blocking of alkaline migration under ionizing irradiation in Cr-doped oxide glasses. Nuclear Instruments and Methods in Physics Research, 2008, 266, pp.2966-2970. ⟨hal-00290774⟩
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