Eu concentration dependence of photoluminescence and scintillation properties on Eu-doped Y3Al5O12 single crystals

被引：2
|
作者：
Kunikata, Toshiaki [1 ]
Watanabe, Kenichi [2 ]
Kantuptim, Prom [1 ]
Shiratori, Daiki [3 ]
Kato, Takumi [1 ]
Nakauchi, Daisuke [1 ]
Kawaguchi, Noriaki [1 ]
Yanagida, Takayuki [1 ]
机构：
[1] Nara Inst Sci & Technol NAIST, 8916-5 Takayama Cho, Ikoma, Nara 6300192, Japan
[2] Kyushu Univ, 744 Motooka,Nishi Ku, Fukuoka 8190395, Japan
[3] Tokyo Univ Sci TUS, 6-3-1 Niijuku,Katsushika Ku, Tokyo 1258585, Japan
来源：
RADIATION PHYSICS AND CHEMISTRY | 2024年 / 216卷
基金：
日本学术振兴会;
关键词：
Scintillator; Radiation detector; Luminescent material; Single crystals; YAG; PHOSPHORS; GROWTH;
D O I：
10.1016/j.radphyschem.2023.111454
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：
(Eux,Y1-x)3Al5O12 (x = 0.005, 0.01, 0.05, 0.10, 0.15, and 0.20) single crystals were prepared by the floating-zone method. We investigated their photoluminescence (PL) and scintillation properties including PL excitation/ emission contour spectra, PL quantum yields, PL decay times, X-ray-induced scintillation spectra, scintillation decay times, and pulse-height spectra under gamma-ray irradiation from 137Cs (662 keV). The PL and scintillation spectra exhibited some emission lines at visible wavelength due to the 4f-4f transitions of Eu3+ ions, and the PL and scintillation decay times resulted several milliseconds. Among all the samples, (Eu0.1,Y0.9)3Al5O12 and (Eu0.15,Y0.85)3Al5O12 single crystals showed the highest PL quantum yield. On the other hand, (Eu0.01, Y0.99)3Al5O12 single crystal showed the highest light yield. The light yield of the sample was estimated to be 36,000 photons/MeV from the pulse height spectrum.
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页数：6
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