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| 1 | Gd^(3+)Tb^(3+)能量转移与Tb^(3+)自敏化效应对重金属锗酸盐玻璃发光性能的影响显示文摘研究了一组Tb3+掺杂重金属锗酸盐玻璃的发光特性。玻璃样品的 X 射线激发发射光谱结果显示,玻璃基质中由 Gd3+ 离子向发光中心 Tb3+ 的能量转移机制以及在一定浓度范围内 Tb3+ 之间的交叉弛豫过程对玻璃的发光性能有重要影响。前者表现在Gd3+紫外发射光的减弱及 Tb3+ 绿发射光的增强,后者则显示Tb3+在一定浓度范围内所特有的自敏化效应,使其蓝发射光减弱、绿发射光增强。第 3 种稀土离子La3+的引入对发光中心 Tb3+ 离子具有分离效应,使Tb3+之间的交叉弛豫概率降低,蓝发射光增强。 | 饶金华 杨云霞 袁双龙 张俊标 陈国荣 S.Baccaro A.Cecilia M.Nikl | 2005 | 功能材料2005，36，1： | 4 |
| 2 | Ce3+掺杂磷酸盐玻璃的紫外与可见光学性能显示文摘研究了基于钆和钠磷酸盐Ce3+掺杂磷酸盐玻璃的紫外吸收和发射光谱.与不含Ce3+的磷酸盐玻璃相比,掺Ce3+的样品紫外吸收边向长波方向移动,发射光谱也随玻璃组成的变化发生相应地红移.该现象的解释基于玻璃光碱度的变化,光碱度不仅与碱金属含量有关,也与O/O值有关.O/P值与PO4单元中的非桥氧数成比例,并且对玻璃的整体光碱度起着主要的决定作用. | 张俊标 饶金华 袁双龙 杨云霞 陈国荣 S.Baccaro A.Cecilia M.Nikl | 2004 | 功能材料2004，35，z1： | 1 |
| 3 | Ce3+对磷酸盐闪烁玻璃耐辐射性能的影响显示文摘研究了空气气氛下制备的掺Ce3+磷酸盐闪烁玻璃.XPS分析结果显示,玻璃网络结构中的铈离子以低化合价(三价)形式存在.分别测试了含Ce3+及不含Ce3+玻璃样品在辐射前及经特定剂量辐射后的紫外可见透过光谱.实验结果表明,含Ce3+玻璃在大于390nm波长处的辐射诱导吸收带消失或明显减弱.通过计算样品的辐射诱导吸收系数μ发现Ce3+离子的引入有效提高了磷酸盐闪烁玻璃的抗辐射能力. | 赵东辉 夏方 杨云霞 陈国荣 S Baccaro A Cecilia M.Nikl | 2004 | 功能材料2004，35，z1： | 0 |
| 4 | Development of novel rare earth doped fluoride and oxide scintillators for two-dimensional imaging显示文摘Two topics were focused.The first one was about the gamma-ray scintillator,Pr3+:Lu3Al5O12(LuAG) .The second one was about neutron scintillator,Ce3+:6LiCaAlF6 and Eu2+:6LiCaAlF6(6LiCAF) .Those scintillators have been developed very recently for modern imaging appli-cations in the medical and homeland security fields.In both cases,the rare earth ions are playing the crucial role as emission centers.Pr3+ in LuAG provided fast 5d→4f transition providing noticeably shorter decay time than that of Ce3+.Among several candidate hosts,LuAG showed the best performance.Bulk crystal growth,basic scintillation properties,two-dimensional gamma-ray imaging and positron emission mammography(PEM) application were demonstrated.Due to the international situation,the homeland security was compromized by illicit traffic of explosives,drugs,nuclear materials,etc.and the ways to its improvement became an important R&D topic.For this purpose the Ce and Eu doped LiCAF ap-peared competitive candidates.Especially,when substitution of 3He neutron detectors was considered,the discrimination ability of gamma-ray from alpha-ray was important.Bulk crystal growth,basic scintillation properties and two-dimensional neutron imaging were demonstrated. | A.Yoshikawa T.Yanagida Y.Yokota K.Kamada N.Kawaguchi K.Fukuda A.Yamazaki K.Watanabe A.Uritani T.Iguchi G.Boulon M.Nikl | 2011 | Journal of Rare Earths2011，29，12： | 0 |
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