Scintillation properties of Tb-doped Sr2Gd8(SiO4)6O2 oxyapatite single crystals

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-09-22 DOI:10.1016/j.radphyschem.2025.113321

Ren Tsubouchi , Haruaki Ezawa , Hiroyuki Fukushima , Daisuke Nakauchi , Kenichi Watanabe , Takumi Kato , Noriaki Kawaguchi , Takayuki Yanagida

引用次数: 0

Abstract

Sr₂Gd₈(SiO₄)₆O₂ oxyapatite materials doped with 1–50% Tb were successfully synthesized using the floating zone method, and the photoluminescence and scintillation properties were clarified. The samples exhibited emission at visible wavelength and decay time in the milli second range, originating from the 4f–4f transitions of Tb³⁺ under ultraviolet light and X-ray irradiation. The photoluminescence quantum yields showed two local maximum values of approximately 70% as a function of Tb concentration. In the pulse height spectra under ¹³⁷Cs γ-rays irradiation, the 5% Tb-doped Sr₂Gd₈(SiO₄)₆O₂ had the light yield of 14600 photons/MeV which was the highest value among the present samples.

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铽掺杂Sr2Gd8(SiO4)6O2氧磷灰石单晶的闪烁特性

采用浮区法成功合成了掺杂1-50% Tb的Sr2Gd8(SiO4)6O2氧化磷灰石材料，并对其光致发光和闪烁性能进行了研究。Tb3+在紫外光和x射线照射下发生4f-4f跃迁，样品在可见光波段发射，衰变时间在毫秒范围内。光致发光量子产率随Tb浓度的变化有两个局部最大值，约为70%。在137Cs γ射线辐照下的脉冲高度光谱中，5% tb掺杂的Sr2Gd8(SiO4)6O2的产光率为14600光子/MeV，是目前样品中最高的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.