Scintillation properties of Eu2+ activated Lu2O3-Al2O3-SiO2 glasses and effect of heat treatment on light yield

IF 3.5 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of Non-crystalline Solids Pub Date : 2025-09-22 DOI:10.1016/j.jnoncrysol.2025.123785

Akihiro Nishikawa , Kenji Shinozaki , Daiki Shiratori , Takumi Kato , Daisuke Nakauchi , Noriaki Kawaguchi , Takayuki Yanagida

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Abstract

The Eu-doped Lu₂O₃-Al₂O₃-SiO₂ glasses with Eu concentrations (0.1, 0.3, 1.0, and 3.0 %) were synthesized by a melt quenching method, and their optical and scintillation properties were investigated. These samples exhibited luminescence of Eu²⁺ at approximately 450 nm in both photoluminescence (PL) and scintillation, with lifetimes of several hundred ns and several μs. As a result of the pulse height spectra, all the samples showed the photoabsorption peak under irradiation with γ-rays of ¹³⁷Cs, and the 1.0 % Eu sample exhibited the highest light yield (LY) of 680 photons/MeV. In addition, the 1.0 % Eu sample was divided into four parts, and each part was heat treated at 800, 1000, 1100, and 1200 °C. Samples other than those heat-treated at 1200°C remained amorphous, while those heat-treated at 1200 °C crystallized. The increase in LY due to heat treatment up to 1100°C was confirmed. The LY of the 1.0 % Eu sample was increased to 910 photons/MeV.

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Eu2+活化的Lu2O3-Al2O3-SiO2玻璃的闪烁特性及热处理对光产率的影响

采用熔体猝灭法合成了Eu浓度分别为0.1、0.3、1.0和3.0%的掺Eu Lu2O3-Al2O3-SiO2玻璃，并对其光学性能和闪烁性能进行了研究。这些样品的光致发光（PL）和闪烁都表现出约450 nm的Eu2+发光，寿命分别为几百ns和几μs。脉冲高度光谱结果表明，在137Cs γ射线照射下，所有样品都出现了光吸收峰，其中1.0% Eu样品的产光率最高，为680光子/MeV。此外，将1.0% Eu样品分成四部分，分别在800、1000、1100、1200℃下进行热处理。除1200℃热处理的样品外，其余样品保持无定形，而1200℃热处理的样品结晶。经证实，在1100°C的温度下，热处理后的LY增加。1.0% Eu样品的LY提高到910光子/MeV。

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

Journal of Non-crystalline Solids 工程技术-材料科学：硅酸盐

CiteScore

6.50

自引率

11.40%

发文量

576

审稿时长

35 days

期刊介绍： The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.