新型闪烁体的辐照效应

无机材料学报

• 研究论文 • 下一篇

新型闪烁体的辐照效应

刘波^1,2; 施朝淑1,2,3; 周东方³

中国科学技术大学1. 中国科学院结构研究实验室; 2. 物理系; 3. 国家同步辐射实验室, 合肥 230026

收稿日期:2000-02-21 修回日期:2000-03-20 出版日期:2001-01-20 网络出版日期:2001-01-20

Irradiation Effect of New Scintillators

LIU Bo^1,2; SHI Chao-Shu^1,2,3; ZHOU Dong-Fang ³

1. Structure Research Laboratory; 2. Department on Prysics; 3. NSRL; University of Science and Technology of China; Hefei 230026; China

Received:2000-02-21 Revised:2000-03-20 Published:2001-01-20 Online:2001-01-20

摘要/Abstract

摘要： 介绍了新型闪烁体辐照效应的研究进展．高能物理实验中使用的闪烁晶体（如ＰＷＯ、ＧＳＯ：Ｃｅ、ＣｅＦ_３等）用于强辐照环境，要求高辐照硬度．闪烁体在辐照后可能产生的变化主要有：色心的形成、光输出改变、光输出均匀性的损伤、输出噪声增加、闪烁机制的变化．辐照效应的产生主要是晶体的缺陷所致，提高闪烁体辐照硬度的主要方法有退火、漂白、掺杂、控制晶体生长条件等，本文对此均作了较系统的综述．同时也简介了研究辐照效应的实验方法：光谱分析法、热释光法、电子顺磁共振法、正电子湮没技术．

关键词: 新型闪烁体, 辐照效应, 结构缺陷, 色心

Abstract: The scintillators used for high-energy physics experiments will encounter a severe irradiation environment. So the irradiation hardness of scintillators must meet
certain requirements. After irradiation, the scintillators will have some changes including the change of scintillation mechanism, the
formation of color centers, the change of light output, the damage of light response uniformity, the increase of noise. The irradiation
effect of scintillators is caused by the structure defects, such as oxygen vacancies. Doping, optimization of crystal growth parameters
and post thermal treatment have been proved to be effective for enhancing the radiation hardness of scintillation crystals. This
article introduces the irradiation effects of new scintillators and several usual methods of studying irradiation effects, including
optical spectroscopy analysis, thermoluminescence, electron paramagnetic resonance and the technique of positron annihilation.

Key words: new type scintillators, irradiation effect, structure defects, color centers

中图分类号:

O734

刘波,施朝淑1,2,3,周东方. 新型闪烁体的辐照效应[J]. 无机材料学报.

LIU Bo,SHI Chao-Shu,ZHOU Dong-Fang. Irradiation Effect of New Scintillators[J]. Journal of Inorganic Materials.

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新型闪烁体的辐照效应

Irradiation Effect of New Scintillators

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