Optical and scintillation properties of Nd-doped Lu2Si2O7 single crystals

被引：12
|
作者：
Kantuptim, Prom [1 ]
Akatsuka, Masaki [1 ]
Nakauchi, Daisuke [1 ]
Kato, Takumi [1 ]
Kawaguchi, Noriaki [1 ]
Yanagida, Takayuki [1 ]
机构：
[1] Grad Sch Sci & Technol, Nara Inst Sci & Technol, Div Mat Sci, 8916-5 Takayama, Ikoma, Nara 6300192, Japan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 860卷
关键词：
Scintillator; Single crystal; Nd3+; Pyrosilicates;
D O I：
10.1016/j.jallcom.2020.158538
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, LPS) single crystals were synthesized by the floating-zone method with different dopant concentration to investigate the Nd-concentration dependence on the photoluminescence (PL) and scintillation properties. The Nd-doped LPS presented PL peaking at 800-900 nm due to the 4-4f transitions with the PL quantum yield up to 34%. Under X-ray irradiation, the samples showed several sharp peaks in both UV-visible and NIR regions. The scintillation decay time constants were around 3-4 mu s upon pulsed X-ray excitation, and the afterglow level at 20 ms after X-ray irradiation was 310-650 ppm. The scintillation light yields of the Nd-doped LPS under gamma-rays from Cs-137 were up to 800 ph/MeV. hMeV. (C) 2020 Elsevier B.V. All rights reserved.
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页数：6
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