超快闪烁晶体 Cs2ZnCl4 研究进展
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中图分类号：O482. 31 文献标识码： ADOI：10. 37188/CJL. 20240346 CSTR：32170. 14. CJL. 20240346
Research Progress of Cs2ZnCl4 Ultrafast Scintillation Crystals
ZUO Xiaoyi1，2，WU Tong2，3，WANG Shaohan2，WANG Ding1，TANG Yiwen 3 ，WANG Dong 2，4 SHI Yun 2，4，5* ，HAN Sancan1*，CHEN Junfeng2
（1. School of Materials and Chemistry，University of Shanghai for Science and Technology，Shanghai 200093，China； 2. R&D Center for Novel Materials，Shanghai Institute of Ceramics，Chinese Academy of Sciences，Shanghai 201899，China； 3. College of Physical Science and Technology，Central China Normal University，Wuhan 430079，China； 4. Center of Materials Science and Optoelectronics Engineering，University of Chinese Academy of Sciences，Beijing 100049，China； 5. Key Laboratory of Rare Earths，Chinese Academy of Sciences，Ganzhou ，China） Corresponding Author，E-mail：shiyun@mail. sic. ac. cn；schan@usst. edu. cn；jfchen@mail. sic. ac. cn
Abstract：The next generation of high energy physics experiments and time-of-flight positron emission tomography imaging require scintillators with ultrafast decay ranging from nanoseconds（ns）to picoseconds（ps）to fulfill the need for higher precision of radiation detection. The Cs2ZnC I4 crystal stands out due to its remarkable advantages of an ultra⁃ fast decay without slow component，a low melting point，non-hygroscopic，as well as the proper emission band match⁃ ing well with commercial photomultiplier tube. In recent years，Cs ZnC 14 crystal has attracted worldwide research inter⁃ ests as a kind of ultrafast scintillator with core-valence luminescence（CVL）. This review emphasis on the research his⁃ tory and progress of Cs2ZnC 14 crystals，including luminescence mechanism，physicochemical properties，crystal growth techniques and the scintillation properties. Particularly，emphasis is placed on the optical and scintillation properties of Cs2ZnCl4 crystal. The application potential of Cs2ZnCl4 crystals as a unique ultrafast scintillator is then concluded.
Key words： Cs2ZnCl4 ；ultrafast scintillator；core-valence luminescence；crystal growth；scintillation performance
1 引 言
闪烁材料能将入射的高能射线或粒子，如 γ 射线、X 射线、 ∝ 或 β 粒子等，转化为紫外或可见光，已在医学成像、高能物理和空间科学等领域实现了广泛应用[1-3]。（剩余21843字）
