人工晶体学报2025，Vol.54Issue(4)：553-559,7.DOI:10.16553/j.cnki.issn1000-985x.2024.0210
大尺寸Cs2LiYCl6∶Ce晶体的制备与性能研究
Preparation and Properties of Large Size Cs2LiYCl6∶Ce Crystal
摘要
Abstract
In this paper,a series of 3-inch(1 inch=2.54 cm)diameter Cs2LiYCl6∶Ce(CLYC∶Ce)crystals with LiCl molar ratios of 55％～60％were grown by vertical Bridgman method.XRD patterns of opaque initial end of the crystals show that the Li-rich group distribution ratio can effectively inhibit the generation of the Cs3YCl6 phase.The optimal molar ratio of LiCl for high quality CLYC is 57％,where the volume ratio of CLYC phase to the total ingot is the largest,and isometric complete length up to 80 mm.Scintillation properties such as relative light output,energy resolution and figure of merit(FOM)of φ76 mm × 76 mm CLYC∶Ce crystal obtained under the optimal proportioning condition were tested.The results show that 4.88％energy resolution is measured at 662 keV of 137 Cs γ rays.The figure of merit(FOM)of pulse shape discrimination(PSD)measured with a 241 Am-Be neutron source is 4.18.The study indicates that CLYC∶Ce crystal has excellent neutron-gamma discrimination performance.关键词
Cs2LiYCl6∶Ce晶体/坩埚下降法/能量分辨率/脉冲波形甄别/品质因子Key words
Cs2LiYCl6∶Ce crystal/Bridgman technique/energy resolution/pulse shape discrimination/figure of merit引用本文复制引用
赵美丽,孙涛峰,高璠,宫红影,臧晓微,桂强,张春生..大尺寸Cs2LiYCl6∶Ce晶体的制备与性能研究[J].人工晶体学报,2025,54(4):553-559,7.基金项目
国家重点研发计划(2022YFB3503603) （2022YFB3503603）
