Development of BaF2 transparent ceramics and evaluation of the scintillation properties

被引：37
|
作者：
Kato, Takumi [1 ]
Okada, Go [1 ]
Fukuda, Kentaro [2 ]
Yanagida, Takayuki [1 ]
机构：
[1] Nara Inst Sci & Technol NAIST, Grad Sch Mat Sci, 8916-5 Takayama Cho, Ikoma, Nara 6300192, Japan
[2] Tokuyama Corp, 1-1 Mikage Cho, Shunan, Yamaguchi 7458648, Japan
来源：
RADIATION MEASUREMENTS | 2017年 / 106卷
关键词：
Transparent ceramics; BaF2; Scintillator; Dosimeter; GAMMA-RAY; CE; LUMINESCENCE; SINGLE; ABSORPTION; CRYSTAL;
D O I：
10.1016/j.radmeas.2017.03.032
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
We have developed BaF2 transparent ceramics by using a spark plasma sintering (SPS), and investigated optical, scintillation and dosimeter properties, in comparison with a BaF2 single crystal. The photoluminescence emission peak of transparent ceramics prepared in a vacuum condition appeared around 500 nm. Under X-ray irradiation, emissions at 190 and 220 nm due to auger-free luminescence (AFL) were observed in the ceramic samples. The scintillation light yield of the BaF2 transparent ceramics was evaluated to be about 6000 photons/MeV under Cs-137 gamma-rays. In addition, the afterglow level of ceramic sample was lower than that of the single crystal. Thermally-stimulated luminescence glow peaks were observed at 50, 105, 140, 205, 280 and 420 degrees C in all the samples. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：140 / 145
页数：6
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