Research Progress of Rare Earth Halide Scintillation Crystals for Neutron/Gamma Dual Detection

Abstract

Abstract: In recent years, with the further study of rare earth halide scintillation crystals, many excellent properties of these materials have been discovered, especially the neutron/gamma ray dual detection performance, which has attracted much attention. Ce doped lithium based elpasolite scintillation crystal with chemical composition of A₂LiRX₆:Ce (A, R, X represent +1 valence metal element, rare earth element, halogen element respectively) and Eu doped lithium based alkaline earth metal halide with chemical composition of LiM₂X₅:Eu (M, X represent +2 valence metal element, halogen element respectively) are considered to be very practical and potential dual detection materials. They can detect neutrons and gamma rays simultaneously, and most of them have high light output, excellent energy resolution and other characteristics. At present, as the most representative of Ce doped lithium based elpasolite scintillation crystal, Cs₂LiYCl₆:Ce (CLYC) has been widely studied and produced. However, Eu doped lithium based alkaline earth metal halide, which is expected to replace elpasolite scintillation crystal materials such as CLYC, is rarely reported. In this paper, the research progress of the above two kinds of dual-mode detection materials is briefly reviewed, with a view to enlightening researchers in related fields.

Key words: rare earth halide scintillation crystal, neutron/gamma dual detection, scintillation performance, activator

CLC Number:

WANG Xiaoli, YANG Lei, HOU Yueyun. Research Progress of Rare Earth Halide Scintillation Crystals for Neutron/Gamma Dual Detection[J]. Journal of Synthetic Crystals, 2023, 52(4): 671-677.

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