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Rui-Qiang Song(宋瑞强), Chuang Liu(刘闯), Yi-Yang Long(龙逸洋), Ji-Feng Han(韩纪锋), Jing Ren(任晶), and Sen Qian(钱森). 2025: A high light-yield neutron scintillator based on Ce3+-doped lithium glass, Chinese Physics B, 34(5): 050703. doi: 10.1088/1674-1056/adb94b
Citation: Rui-Qiang Song(宋瑞强), Chuang Liu(刘闯), Yi-Yang Long(龙逸洋), Ji-Feng Han(韩纪锋), Jing Ren(任晶), and Sen Qian(钱森). 2025: A high light-yield neutron scintillator based on Ce3+-doped lithium glass, Chinese Physics B, 34(5): 050703. doi: 10.1088/1674-1056/adb94b
shu

A high light-yield neutron scintillator based on Ce3+-doped lithium glass

  • 1 Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China;

  • 2 College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China;

  • 3 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

  • Received Date: 30/12/2024
    Accepted Date: 13/02/2025
  • Fund Project:

    Project supported by the National Key R&D Program of China (Grant No. 2023YFF0721700) and the National Natural Science Foundation of China (Grant No. 12475312).

  • PACS: 07.07.Df; 28.20.Fc; 29.30.Hs; 29.40.Mc

  • The development of low-cost and highly efficient thermal neutron detection materials to substitute the rare and expensive $^{3}$He gas is important for applications requiring thermal neutron detection. Lithium-based glass (Li glass) is a promising candidate due to its simple fabrication process and low cost. This paper reports the optical properties and scintillation performance of a new Ce$^{3+}$-doped Li glass, whose luminescence efficiency is significantly enhanced with a light yield of about 4770 ph/MeV, which is about 54% of that of BGO crystal, and the energy resolution is 14.5% for 662 keV gamma rays. The Ce$^{3+}$-doped Li glass shows a high light yield of about 7058 ph/neutron, which is about 1.18 times that of the reference GS20 glass. The Ce$^{3+}$-doped Li glass exhibits stronger gamma ray suppression capability compared to GS20 glass samples. Further optimizing the Ce$^{3+}$ concentration and $^{6}$Li content is expected to achieve much superior neutron detection efficiency, positioning it as a promising alternative to $^{3}$He gas for efficient thermal neutron detection.
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A high light-yield neutron scintillator based on Ce3+-doped lithium glass

  • Received Date: 30/12/2024
  • Accepted Date: 13/02/2025
Fund Project: 

Abstract: The development of low-cost and highly efficient thermal neutron detection materials to substitute the rare and expensive $^{3}$He gas is important for applications requiring thermal neutron detection. Lithium-based glass (Li glass) is a promising candidate due to its simple fabrication process and low cost. This paper reports the optical properties and scintillation performance of a new Ce$^{3+}$-doped Li glass, whose luminescence efficiency is significantly enhanced with a light yield of about 4770 ph/MeV, which is about 54% of that of BGO crystal, and the energy resolution is 14.5% for 662 keV gamma rays. The Ce$^{3+}$-doped Li glass shows a high light yield of about 7058 ph/neutron, which is about 1.18 times that of the reference GS20 glass. The Ce$^{3+}$-doped Li glass exhibits stronger gamma ray suppression capability compared to GS20 glass samples. Further optimizing the Ce$^{3+}$ concentration and $^{6}$Li content is expected to achieve much superior neutron detection efficiency, positioning it as a promising alternative to $^{3}$He gas for efficient thermal neutron detection.

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