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Effects of Nb2O5dopant on the radiation response of barium gallo-germanate(BGG)glass are studied mainly by electron paramagnetic resonance and absorption spectroscopy.Owing to the Nb5+$Nb3+interconversion in doped samples,formations of Ge-related non-bridging oxygen hole center and Ge-related electron center defects after g-ray irradiation are inhibited.Thereby,Nb2O5dopant can enhance radiation resistance of BGG glass,and 1.0%Nb2O5 concentration is the best. 相似文献
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