摘要
闪烁体是探测系统中的核心功能材料,对系统能力的提高起着至关重要的作用,然而在应用中由于全内反射作用,导致大量闪烁光子被限制在晶体内部,无法出射,阻碍了探测效率的进一步提升。光子晶体是一种典型的微纳结构材料,可以实现对闪烁发光的调控,提高闪烁体的光输出效率,控制发光的方向性。介绍了近年来国内外有关光子晶体闪烁体的研究进展,主要包括光子晶体调控闪烁发光的基本原理、光子晶体闪烁体的制备技术、光子晶体闪烁体提高探测系统能量分辨率和时间分辨率的方法。
In the radiation detection systems,due to the effect of total internal reflection,a large number of scintillation photons are trapped in the internal of scintillators,which impedes the further improvement of the detection efficiency.Photonic crystals are a kind of typical micro-structure materials,which can improve the light output efficiency of the scintillator and control the directionality of light emission.In this paper,we introduce the advances in scintillators boosted by photonic crystals for recent years,mainly including the principle of control mechanism,and the preparation technology of photonic principles.The approaches of improving the energy resolution and timing resolution by using photonic crystals are also discussed.
出处
《现代应用物理》
2017年第4期1-9,共9页
Modern Applied Physics
基金
国家自然科学基金资助项目(11435010
11374229
11574230)
强脉冲辐射环境模拟与效应国家重点实验室资助项目(SKLIPR1516)
关键词
闪烁体
光子晶体
光提取
时间分辨率
能量分辨率
scintillator
photonic crystals
light extraction
timing resolution
energy resolution
