Optical and scintillation properties of Bi_4Si_3O_(12):RE(RE=Eu~(3+), Sm~(3+),Ho~(3+), Tb~(3+))single crystals

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英文篇名：Optical and scintillation properties of Bi_4Si_3O_(12):RE(RE=Eu~(3+), Sm~(3+),Ho~(3+), Tb~(3+))single crystals 作者：Xuefeng ; Xiao ; Jiayue ; Xu ; Haicheng ; Wei ; Yaoqing ; Chu ; Bobo ; Yang ; Xuefeng ; Zhang 英文作者：Xuefeng Xiao;Jiayue Xu;Haicheng Wei;Yaoqing Chu;Bobo Yang;Xuefeng Zhang;Key Laboratory of Physics and Photoelectric Information Functional Materials Sciences and Technology, North Minzu University;College of Electric and Information Engineering, North Minzu University;School of Materials Science and Engineering, Tongji University;School of Materials Science and Engineering, Shanghai Institute of Technology;Ningxia Ju Jing Yuan Crystal Technology Company Limited; 英文关键词：BSO crystal;;Vertical Bridgeman method;;Scintillation characteristics;;Relative light yield;;Rare earths 中文刊名：YXTB 英文刊名：稀土学报(英文版) 机构：Key Laboratory of Physics and Photoelectric Information Functional Materials Sciences and Technology, North Minzu University;College of Electric and Information Engineering, North Minzu University;School of Materials Science and Engineering, Tongji University;School of Materials Science and Engineering, Shanghai Institute of Technology;Ningxia Ju Jing Yuan Crystal Technology Company Limited; 出版日期：2019-03-06 出版单位：Journal of Rare Earths 年：2019 期：v.37 基金：Project supported by the Ningxia College Scientific Research Project(NGY2017161);; the National Natural Science Foundation of China(51342007,11864001,61461001);; the National Key Basic Research Program(2011CB612310);; the Ningxia First-class Discipline and Scientific Research Projects(Electronic Science and Technology,NXYLXK2017A07);; Natural Science Foundation of Ningxia(NZ17104);; the Key Research and Development Program of Ningxia Province(2018BEE03015);; the Key Laboratory of North Minzu University(intelligent perception control) 语种：英文; 页：YXTB201903007 页数：5 CN：03 ISSN：11-2788/TF 分类号：44-48

摘要

Bi_4 Si_3 O_(12):RE(BSO:RE, RE = Eu~(3+), Sm~(3+), Ho~(3+), Tb~(3+)) crystals were grown by the modified vertical Bridgeman method, and doping effects on scintillation properties were investigated. Under γ-ray irradiation, the light yield of BSO doped with small doses of Eu~(3+) increases slightly, and the energy resolution improves significantly compared to pure BSO, therefore the ability of distinguishing between particles will be improved for BSO crystals with a small amount of Eu~(3+) dopant. The results show that a small amount of Eu~(3+) doping can sensitize the Bi~(3+) ions. The sensitization effect enables the reduction of intrinsic defects, and thus improves the scintillation properties. However, the relative light yield of BSO:Tb(1.0 mol%) crystal is 4.3%, which is smaller than 5.0% of pure BSO. The improved light yield and energy resolution in the BSO:Eu and BSO:Sm crystals are considered an impressive achievement in the optimization of this scintillator which is already suitable for applications such as dual-readout calorimeters and homogeneous hadron calorimeters.
        Bi_4 Si_3 O_(12):RE(BSO:RE, RE = Eu~(3+), Sm~(3+), Ho~(3+), Tb~(3+)) crystals were grown by the modified vertical Bridgeman method, and doping effects on scintillation properties were investigated. Under γ-ray irradiation, the light yield of BSO doped with small doses of Eu~(3+) increases slightly, and the energy resolution improves significantly compared to pure BSO, therefore the ability of distinguishing between particles will be improved for BSO crystals with a small amount of Eu~(3+) dopant. The results show that a small amount of Eu~(3+) doping can sensitize the Bi~(3+) ions. The sensitization effect enables the reduction of intrinsic defects, and thus improves the scintillation properties. However, the relative light yield of BSO:Tb(1.0 mol%) crystal is 4.3%, which is smaller than 5.0% of pure BSO. The improved light yield and energy resolution in the BSO:Eu and BSO:Sm crystals are considered an impressive achievement in the optimization of this scintillator which is already suitable for applications such as dual-readout calorimeters and homogeneous hadron calorimeters.

引文

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