文献类型：期刊文献

中文题名：稀土离子(Ce^(3+),Tb^(3+),Pr^(3+))掺杂重金属锗酸盐玻璃的光谱透过及抗辐射性能

英文题名：OPTICAL CHARACTERIZATION OF RARE EARTHS (Ce^(3+),Tb^(3+),Pr^(3+)) DOPED HEAVY METAL GERMANATE GLASSES BEFORE AND AFTER IRRADIATION

作者：陈国荣[1];BACCARO S[2];聂佳相[1];张永辉[1];杜永娟[1];CECILIA A[2];汪山[2]

机构：[1]华东理工大学无机材料系,上海200237;[2]国家能源,环境,新技术研究所^60Co放射性同位素源联合实验室

年份：2003

卷号：31

期号：7

起止页码：673

中文期刊名：硅酸盐学报

外文期刊名：Journal of The Chinese Ceramic Society

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金 ( 5 0 2 42 0 17);上海市重点学科建设资助项目

语种：中文

中文关键词：重金属锗酸盐玻璃;稀土离子掺杂;紫外透射性能;抗辐射性能

外文关键词：heavy metal germanate glasses; rare earth ions doping; ultraviolet transparency; irradiation resistance

摘要：从新型抗辐射闪烁体材料的应用背景出发 ,对某些稀土离子掺杂重金属锗酸盐玻璃进行了紫外与可见光谱区的透过性能及抗辐射性能的表征 ,重点讨论玻璃基质组成与短波截止波长之间的关系以及一些元素对玻璃抗辐射性能的影响。玻璃基质组成涉及GeO2 ,Gd2 O3,BaO ,SnO ,La2 O3,掺杂的稀土元素包括Ce3+ ,Tb3+ ,Pr3+ 。实验结果表明 :这些重金属锗酸盐玻璃的紫外截止波长适中 ( 35 0nm ) ,适于用作掺杂稀土离子的基质材料。Sn2 + 和Ce3+ 使玻璃的紫外截止波长明显红移 ,其原因与特殊的紫外吸收机理有关。在所加入的元素中 ,Sn2 +和稀土离子Ce3+ ,Tb3+ ,Pr3+ 均对玻璃的抗辐射性能有增强作用 ,其中以Ce3+ 抗辐射效应最为明显 。
Optical transparency and irradiation resistance of some heavy metal germanate glasses doped with scintillating rare earth ions are characterized. Glass compositions involve GeO 2, Gd 2O 3, BaO, SnO, La 2O 3, and rare earth dopants include Ce 3+, Tb 3+ and Pr 3+. The results indicate that the glass matrices have moderate UV cut-off edges at about 350 nm wavelength, which are suitable for hosting these rare earths respect to their emission wavelengths. The UV cut-off positions are obviously shifted to red by the additives of Sn 2+ and Ce 3+, due to the different UV absorption mechanism occurring in glasses. Ce 3+, Tb 3+, Pr 3+ and Sn 2+ are found to exert positive influences on irradiation resistance of glasses and Ce 3+ plays the most pronounced role. Such phenomena are mainly attributed to variable valences of these cations.