Abstract Depending on the dose of ionizing radiation, ScPO4:0.1%Eu3+ sintered ceramic presents significantly different thermoluminescent properties. Despite a thermoluminescent peak around 90 °C which appears upon small doses (up to tens of mGy) it also shows strong thermoluminescence at 240 °C but only after exposure to higher doses. In both cases, the thermoluminescence is generated by Eu3+ ions, which also serve as electron traps. Recognition of the relevant hole traps responsible for the thermoluminescent peaks needs more comprehensive research using such tools as advanced EPR spectroscopy at different temperatures. At room temperature, the thermoluminescence peak at 240 °C is very resistant to fading hardly showing any loss of intensity within 24 h. The peak at 90 °C fades continuously at ambient conditions and after 24 h its intensity drops to about 10% of its original strength. Hence, this component is responsible for the hours-lasting persistent luminescence of the ScPO4:0.1%Eu3+ ceramic.

中文翻译：

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剂量对ScPO4:Eu3+陶瓷热释光的影响

摘要 根据电离辐射剂量的不同，ScPO4:0.1%Eu3+烧结陶瓷呈现出明显不同的热释光性能。尽管在小剂量（高达数十 mGy）时出现了 90 °C 附近的热释光峰，但它在 240 °C 时也显示出强烈的热释光峰，但仅在暴露于更高剂量之后。在这两种情况下，热释光都是由 Eu3+ 离子产生的，Eu3+ 离子也用作电子陷阱。识别负责热释光峰的相关空穴陷阱需要使用不同温度下的高级 EPR 光谱等工具进行更全面的研究。在室温下，240 °C 的热释光峰非常耐褪色，在 24 小时内几乎没有表现出任何强度损失。90 °C 的峰值在环境条件下持续衰减，24 小时后其强度下降到其原始强度的 10% 左右。因此，该成分是 ScPO4:0.1%Eu3+ 陶瓷持续数小时持续发光的原因。