Luminescence and dose-rate response properties of Pr-doped Bi4Ge3O12 scintillators

被引：17

作者：

Okazaki, Kai ^{[1
]}

Fukushima, Hiroyuki ^{[1
]}

Nakauchi, Daisuke ^{[1
]}

Okada, Go ^{[2
]}

Onoda, Daichi ^{[1
]}

Kato, Takumi ^{[1
]}

Kawaguchi, Noriaki ^{[1
]}

Yanagida, Takayuki ^{[1
]}

机构：

[1] Nara Inst Sci & Technol NAIST, Div Mat Sci, 8916-5 Takayama Cho, Ikoma, Nara 6300192, Japan

[2] Kanazawa Inst Technol, Cocreat Res Ctr Ind Sci & Technol, 3-1 Yatsukaho, Haku San, Ishikawa 9240838, Japan

来源：

RADIATION MEASUREMENTS | 2022年 / 154卷

基金：

日本学术振兴会;

关键词：

Scintillator; Photoluminescence; Floating zone method; Dose-rate response; Afterglow; RAY-INDUCED LUMINESCENCE; RARE-EARTH IONS; PHOTOLUMINESCENCE; EMISSION; CRYSTALS; BGO;

D O I：

10.1016/j.radmeas.2022.106773

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：

In recent years, there has been increasing demand for a scintillator showing near-infrared (NIR) luminescence owing to the potential for radiation monitoring applications. In this study, Pr-doped Bi4Ge3O12 (BGO) single crystals were prepared by the floating zone method to explore candidates as a NIR scintillator, and the luminescence and dose-rate response properties of Pr-doped BGO were studied. Both photoluminescence and scintillation peaks appeared at 400-600 nm due to Bi3+, and sharp emission peaks by Pr3+ were also confirmed at 480-1100 nm, with consistent decay times. Further, to investigate performance as a scintillation detector, a linearity of the response to X-ray exposure dose rate was evaluated. Among the samples, the 0.5% Pr-doped BGO showed the highest sensitivity with the lowest detection limit of 0.006 Gy/h.

引用

页数：6

共 44 条

[1] Scintillation Properties of Nd-doped LuVO4 Single Crystals [J].