| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1686054 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2008 | 5 Pages |
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.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
B. Boizot, F.Y. Olivier, G. Petite, D. Ghaleb,