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...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 6Li 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.展开更多
基金supported by the National Key R&D Program of China(Grant No.2023YFF0721700)the National Natural Science Foundation of China(Grant No.12475312).
文摘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 6Li 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.
