We compare theE', H(I) and Si-ODC(II) contents in a low-OH high-purity a-SiO2both in bulk and fibre forms. The investigation includes the effects of hydrogen loading of the fibre. We found that the H(I) centre appears during irradiation and that its concentration tends to increase with the dose in fibers impregnated with molecular hydrogen. For the hydrogen-treated fibers, no experimental repeatability could be found in the measurements ofE'and Si-ODC(II) although an acceptable agreement was still found in non-hydrogenated samples. This result suggests a possible complex reaction mechanisms under gamma radiation when the glass has a hydrogen excess.
No takes yet. Share an insight, caveat, or question.
Brichard et al. (2008) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: