Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (1): 11 doi: 10.1007/s41365-017-0342-4

• NUCLEAR ELECTRONICS AND INSTRUMENTATION • Previous Articles     Next Articles

Characterization of the new scintillator Cs2LiYCl6:Ce3+

Kui-Nian Li 1 • Xian-Peng Zhang 1,2 • Qiang Gui 3 • Peng Jin 1 • Geng Tian 1   

  1. 1 Northwest Institute of Nuclear Technology, Xi’an 710024, China
    2 School of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China
    3 Beijing Glass Research Institute, Beijing 101111, China
  • Contact: Kui-Nian Li E-mail:lk.nian@foxmail.com
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (No. 11575145).

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Kui-Nian Li, Xian-Peng Zhang, Qiang Gui, Peng Jin, Geng Tian. Characterization of the new scintillator Cs2LiYCl6:Ce3+.Nuclear Science and Techniques, 2018, 29(1): 11     doi: 10.1007/s41365-017-0342-4

Abstract:

The first domestic inorganic scintillator, Cs2LiYCl6:Ce3+ (CLYC), was grown at Beijing Glass Research Institute using the vertical Bridgman method. In this work, we evaluated the performance of this new CLYC crystal in terms of its gamma-ray energy resolution and pulse shape discrimination (PSD) capability between neutrons and gamma rays. The decay times associated with different scintillation mechanisms were obtained by fitting decay functions to the neutron and gamma-ray waveform structures. We found an energy resolution of ~ 4.5% for 662-keV gamma rays and efficient neutron/gamma PSD with a figure of merit of ~ 2.6. Under gamma-ray excitation, there is an ultrafast scintillation mechanism in CLYC with a decay time of approximately 2 ns, whereas there is no evidence of ultrafast decay under thermal neutron excitation. This work contributes to the promotion of domestic development of CLYC.

Key words: Cs2LiYCl6:Ce3+, Energy resolution, Pulse shape discrimination, Decay time, Thermal neutrons