Tm concentration dependence of scintillation characteristics on Tm-doped Lu2Si2O7 single crystal

被引：16
作者：
Kantuptim, Prom [1 ]
Akatsuka, Masaki [1 ]
Nakauchi, Daisuke [1 ]
Kato, Takumi [1 ]
Kawaguchi, Noriaki [1 ]
Yanagida, Takayuki [1 ]
机构：
[1] Nara Inst Sci & Technol, Grad Sch Sci & Technol, Div Mat Sci, 8916-5 Takayama, Ikoma, Nara 6300192, Japan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 847卷
关键词：
Scintillator; Lutetium pyrosilicate; Tm3+; Pulse height; Floating zone method; LUMINESCENCE; CE; EFFICIENCY; DETECTORS;
D O I：
10.1016/j.jallcom.2020.156542
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Lutetium pyrosilicate (Lu2Si2O7) single crystals were synthesized by using the floating-zone method with 0.1, 0.5, 1.0, 2.0 and 5.0% of Tm-doping concentration. After the phase confirmation by powder XRD, photoluminescence (PL) and scintillation properties were systematically measured, including PL emission map, PL decay time, scintillation spectra, scintillation decay time and pulse height spectra. When we irradiated X-rays, we observed the scintillation emission at 360 and 460 nm caused by Tm3+ 4f-4f transitions. Under 662 keV gamma-ray irradiation, we determined absolute scintillation light yield of 2340 ph/MeV for the 2.0% Tm doped sample. Taking into account whole optical and scintillation properties, 2.0% doping was the best for Tm-doped LPS crystals. (C) 2020 Elsevier B.V. All rights reserved.
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页数：7
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