Growth and Properties of 1-inch Cs<sub>2</sub>LiLa（Br,Cl）<sub>6</sub>∶Ce Scintillation Crystal

LIU Shengwei; WEI Qinhua; TONG Yufeng; ZHENG Zhongqiu; YIN Hang; TANG Gao; ZHANG Suyin; QIN Laishun

doi:10.37188/CJL.20230201

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Growth and Properties of 1-inch Cs₂LiLa（Br,Cl）₆∶Ce Scintillation Crystal

Synthesis and Properties of Materials | 更新时间：2023-11-27

- Growth and Properties of 1-inch Cs₂LiLa（Br,Cl）₆∶Ce Scintillation Crystal
  增强出版
- Chinese Journal of Luminescence Vol. 44, Issue 11, Pages: 1923-1930(2023)
- 作者机构：
  
  1.中国计量大学材料与化学学院，浙江杭州　310018
  2.中国科学院上海硅酸盐研究所人工晶体研究中心，上海　201899
- 作者简介：
- 基金信息：
  
  Supported provided by the National Natural Science Foundation of China （NSFC）(12275262);National Key R&D Program of China(2022YFB3503600)
- DOI：10.37188/CJL.20230201
  CLC： O482.31
- Published：05 November 2023，
  
  Received：04 September 2023，
  
  Revised：23 September 2023，
- 稿件说明：
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刘生伟,魏钦华,童宇枫等.1 英寸Cs₂LiLa（Br,Cl）₆∶Ce闪烁晶体的生长及性能[J].发光学报,2023,44(11):1923-1930.

LIU Shengwei,WEI Qinhua,TONG Yufeng,et al.Growth and Properties of 1-inch Cs₂LiLa（Br,Cl）₆∶Ce Scintillation Crystal[J].Chinese Journal of Luminescence,2023,44(11):1923-1930.
刘生伟,魏钦华,童宇枫等.1 英寸Cs₂LiLa（Br,Cl）₆∶Ce闪烁晶体的生长及性能[J].发光学报,2023,44(11):1923-1930. DOI： 10.37188/CJL.20230201.

LIU Shengwei,WEI Qinhua,TONG Yufeng,et al.Growth and Properties of 1-inch Cs₂LiLa（Br,Cl）₆∶Ce Scintillation Crystal[J].Chinese Journal of Luminescence,2023,44(11):1923-1930. DOI： 10.37188/CJL.20230201.

摘要

掺杂的钾冰晶石结构的卤化物闪烁晶体因具有优异的闪烁性能，得到了广泛的关注。本文采用坩埚下降法成功制备了1英寸高质量Ce

掺杂Cs

LiLa（Br，Cl）

闪烁晶体。通过X射线衍射谱、EDS、X 射线光电子谱等手段对Cs

LiLa（Br，Cl）

∶Ce晶体的晶体结构和组分进行了分析，结果表明Cl

成功掺入基质材料后晶体结构未发生明显变化。光致发光荧光光谱、X射线激发发射光谱、紫外荧光衰减等结果表明，Cl

掺杂后未产生新的发光中心，紫外衰减时间约为28 ns。最后测试了晶体在

137

Cs@662 keV的伽马源和

252

Cf源下的能谱，发现晶体具有优异的能量分辨率（4.2%@662 keV）和中子甄别性能（FOM值达到1.9），在核辐射探测领域具有巨大的应用前景。

Abstract

Because of the excellent scintillation performance， halide scintillation crystals with elpasolite structure doped with Ce

have been attracted wide attention. In this paper， high-quality Ce

doped Cs

LiLa（Br，Cl）

scintillation crystal with 1-inch size has been prepared successfully by Bridgman method. The crystal structure and composition of Cs

LiLa（Br，Cl）

∶Ce crystals were analyzed by X-ray diffraction， EDS， and X-ray photoelectron spectroscopy. The results show that the Cl

was successfully introduced into the matrix material and the crystal structure was unchanged. The photoluminescence spectra， X-ray excited emission spectra， and ultraviolet fluorescence decay results show that Cl

doping did not have a significant effect on luminescence center. It still has a fast decay time of 28 ns. The energy spectra of the crystal were measured under

137

Cs@662 keV gamma source and

252

Cf source. It was found that the crystal had excellent energy resolution （4.2%@662 keV） and neutron discrimination performance （FOM value is 1.9）， which had great application prospects in the field of nuclear radiation detection.

关键词

Cs2LiLa（Br，Cl）6∶Ce闪烁晶体坩埚下降法中子/伽马甄别

Keywords

Cs2LiLa（Br，Cl）6∶Cescintillation crystalBridgman methodneutron/gamma discrimination

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Growth and Properties of 1-inch Cs2LiLa（Br,Cl）6∶Ce Scintillation Crystal

DOI：10.37188/CJL.20230201

摘要

Abstract

关键词

Keywords

references

Growth and Properties of 1-inch Cs₂LiLa（Br,Cl）₆∶Ce Scintillation Crystal