Fast Ce³⁺-activated borosilicate glass scintillators prepared in air atmosphere

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• 作者：Xin-Yuan Sun^a ; Zhuo-Hao Xiao^b ; ^{xiaozhuohao@126.com} ; Yun-Tao Wu^c ; Zhitao Kang^d ; ^{zhitao.kang@gtri.gatech.edu}
• 关键词：Ce3+-activated borosilicate glass scintillators ; Silicon carbide ; Photoluminescence ; Radioluminescence
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：43
• 期：3
• 页码：3401-3404
• 全文大小：546 K
• 卷排序：43

文摘

We report a simple synthesis method of a transparent and colorless Ce3+-activated borosilicate glass scintillator by conventional melt-quenching method in air atmosphere. The optical transmittance and X-ray absorption near edge spectroscopy (XANES) spectra imply that ceric ions (Ce4+) can be effectively reduced to cerous one (Ce3+) in borosilicate glass scintillator by substituting 40–60 mol% SiC for SiO2. Compared to the x=0 glass scintillator, both the photo- and radioluminescence intensity of the optimized borosilicate glass scintillator (x=15 C) are enhanced by a factor of 6.5 and 7.7, respectively. The integral radioluminescence intensity of the x=15 C borosilicate glass scintillator resulted from the combined reduction effect of both SiC and graphite powder is about that of 14% bismuth germinate (BGO) crystal.