面向集装箱安检应用的Mg4Ta2O9闪烁晶体及其掺杂改性

人工晶体学报 ›› 2021, Vol. 50 ›› Issue (10): 1870-1878.

面向集装箱安检应用的Mg₄Ta₂O₉闪烁晶体及其掺杂改性

马云峰¹, 徐家跃¹, 蒋毅坚², BOURRET-COURCHESNE Edith³

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

收稿日期:2021-09-01 出版日期:2021-10-15 发布日期:2021-11-24
作者简介:马云峰(1985—),男,山西省人,博士,讲师。E-mail:yunfengma@sit.edu.cn。马云峰(1985—),男,博士,上海应用技术大学材料科学与工程学院讲师、硕士生导师。主要研究方向为晶体生长技术和新型闪烁晶体的开发。擅长光学浮区法、微下拉法等生长技术,目前在研国家自然科学基金青年基金项目“新型高温闪烁晶体Mg₄Ta₂O₉的生长及其掺杂改性”。开展了超快闪烁晶体ZnO∶Ga、光电晶体Ca_xBa_1-xNb₂O₆、多铁材料晶体BiFeO₃、新型闪烁晶体Mg₄Ta₂O₉等晶体生长及性能研究工作。
基金资助:
国家自然科学基金(51802196)

Scintillation Crystal Mg₄Ta₂O₉ and Its Doping Modification for Container Security Applications

MA Yunfeng¹, XU Jiayue¹, JIANG Yijian², BOURRET-COURCHESNE Edith³

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

Received:2021-09-01 Online:2021-10-15 Published:2021-11-24

摘要/Abstract

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

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.

Key words: magnesium tantalite crystal, Mg₄Ta₂O₉, scintillation crystal, micro-pulling-down method, optical floating-zone method, doping

中图分类号:

O734

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.

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.

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面向集装箱安检应用的Mg₄Ta₂O₉闪烁晶体及其掺杂改性

Scintillation Crystal Mg₄Ta₂O₉ and Its Doping Modification for Container Security Applications

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