Scintillation Properties of Cs2LiYCl6:Ce Crystal for Neutron and Gamma Dual Detection

Abstract

Abstract: Cs₂LiYCl₆:Ce(CLYC) is a novel scintillation crystal with the capability of neutron and gamma-ray detection. It can be used in the field of neutron and gamma-ray detection. The CLYC scintillation crystal with 95% enrichment of ⁶Li was grown by the vertical Bridgman method. After processing and moisture-proof packaging, a housed sample of φ50 mm×50 mm CLYC scintillation crystal was obtained. 4.22% energy resolution is measured at 662 keV of ¹³⁷Cs gamma rays. Neutron-gamma discrimination is also achieved. The figure of merit (FOM) of pulse shape discrimination (PSD) measured with a ²⁵²Cf neutron source is 3.45. With its excellent performance, CLYC scintillation crystal is expected to replacement for Helium-3 gas in the field of neutron detection, and can be used as the preferred material for n/γ dual detection. So CLYC crystal can be used in neutron radiation detectors, radioisotope identification instruments, personal radiation dosimeters, and other neutrons-gamma detection.

Key words: scintillation crystal, Cs₂LiYCl₆:Ce, n/γ discrimination, neutron radiation detection, Bridgman method, pulse shape discrimination, energy resolution

CLC Number:

O782

HOU Yueyun, GUI Qiang, ZHANG Chunsheng, YANG Lei, YUAN Huiping, LIU Shan, REN Guohao, ZHANG Mingrong. Scintillation Properties of Cs₂LiYCl₆:Ce Crystal for Neutron and Gamma Dual Detection[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(10): 1933-1939.

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Scintillation Properties of Cs₂LiYCl₆:Ce Crystal for Neutron and Gamma Dual Detection

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