| 面向集装箱安检应用的Mg4Ta2O9闪烁晶体及其掺杂改性 |
| |
| 引用本文： | 马云峰,徐家跃,蒋毅坚,BOURRET-COURCHESNE Edith.面向集装箱安检应用的Mg4Ta2O9闪烁晶体及其掺杂改性[J].人工晶体学报,2021,50(10):1870-1878. |
| |
| 作者姓名： | 马云峰 徐家跃 蒋毅坚 BOURRET-COURCHESNE Edith |
| |
| 作者单位： | 1.上海应用技术大学材料科学与工程学院,上海 201418;2.北京工业大学激光工程研究院,北京 100124;3.加州大学劳伦斯伯克利国家实验室,加州伯克利 94720 |
| |
| 基金项目： | 国家自然科学基金(51802196) |
| |
| 摘 要： | 钽酸镁(Mg4Ta2O9)晶体的衰减时间快于CdWO4晶体,光产额及能量分辨率高于CdWO4晶体,低余辉特性和CdWO4类似,在0.01%/3 ms左右,又由于Mg4Ta2O9晶体材料无毒性元素,使其成为具有替代含有毒Cd元素的CdWO4晶体,应用于集装箱安检领域的最佳候选材料之一。本文综述了Mg4Ta2O9晶体的结构特性、晶体生长、闪烁性能及掺杂改性等方面的研究进展,发现通过掺杂Zn或Nb能显著提高其光产额。
|
| 关 键 词： | 钽酸镁晶体 Mg4Ta2O9 闪烁晶体 微下拉法 光学浮区法 掺杂 |
| 收稿时间： | 2021-09-01 |
Scintillation Crystal Mg4Ta2O9 and Its Doping Modification for Container Security Applications |
| |
| MA Yunfeng,XU Jiayue,JIANG Yijian,BOURRET-COURCHESNE Edith.Scintillation Crystal Mg4Ta2O9 and Its Doping Modification for Container Security Applications[J].Journal of Synthetic Crystals,2021,50(10):1870-1878. |
| |
| Authors: | MA Yunfeng XU Jiayue JIANG Yijian BOURRET-COURCHESNE Edith |
| |
| Institution: | 1. School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China;2. Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China;3. Lawrence Berkeley National Laboratory, University of California, Berkeley CA 94720, USA |
| |
| Abstract: | The decay time of magnesium tantalate (Mg4Ta2O9) crystal is shorter than that of CdWO4 crystal, and its light yield and energy resolution are slightly higher than that of CdWO4 crystal respectively. Its afterglow is 0.01%/3 ms as low as that of CdWO4. In addition, the Mg4Ta2O9 crystal has no toxic elements, and will be one of the best candidate materials in the field of container security inspection for replacing CdWO4 crystal which containing toxic element Cd. The research progresses in the structural properties, crystal growth, scintillation properties and doping modification of Mg4Ta2O9 crystals are reviewed. The research show that Mg4Ta2O9 doping with Zn2+ or Nb5+ ions can significantly increase its light yield. |
| |
| Keywords: | magnesium tantalite crystal Mg4Ta2O9 scintillation crystal micro-pulling-down method optical floating-zone method doping |
|
| 点击此处可从《人工晶体学报》浏览原始摘要信息 |
| 点击此处可从《人工晶体学报》下载免费的PDF全文 |
|
