Abstract Lithium magnesium phosphate (LiMgPO4, called LMP) crystals doped with different concentration of Tb, B and Tm were tested in regard to their radioluminescence emitted during irradiation. LMP crystals were grown with a micro-pulling down method as rods at IFJ PAN. The samples in the form of the thin slices were very sensitive to the ionizing radiation. Differently doped LMP samples were tested in a fiber optic measurement system (called PORTOS) which was constructed and adopted to the specific spectral properties of LMP. The LMP detector placed at the end of 15 m fiber connected to the PORTOS device was tested with gamma rays emitted from Co-60 Theratron 780E as well as with a Cs-137 source in a Laboratory for Calibration of Radiation Protection Instruments at IFJ PAN. RL signal was roughly proportional to the dose rates in the wide range of the dose rates. The highest RL signal was recorded for LMP crystals doped with 0.8 mol% of Tb as well as doped with 0.8 mol% Tm. The radioluminescence signal was discussed in regard to the thermoluminescence (TL) glow curves and optically stimulated luminescence (OSL) decay curves for 14 differently doped LMP crystals.

中文翻译：

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掺Tb、B和Tm的LiMgPO4的辐射发光研究

摘要 测试了掺杂不同浓度 Tb、B 和 Tm 的磷酸锂镁 (LiMgPO4，称为 LMP) 晶体在辐照过程中发出的辐射发光。LMP 晶体在 IFJ PAN 上用微下拉法作为棒生长。薄片形式的样品对电离辐射非常敏感。在光纤测量系统（称为 PORTOS）中测试了不同掺杂的 LMP 样品，该系统被构建并用于 LMP 的特定光谱特性。LMP 探测器放置在连接到 PORTOS 设备的 15 m 光纤末端，在 IFJ PAN 的辐射防护仪器校准实验室中，使用 Co-60 Theratron 780E 和 Cs-137 源发射的伽马射线进行了测试。在很宽的剂量率范围内，RL 信号与剂量率大致成正比。对于掺杂 0.8 mol% Tb 以及掺杂 0.8 mol% Tm 的 LMP 晶体记录到最高 RL 信号。针对 14 种不同掺杂的 LMP 晶体的热释光 (TL) 辉光曲线和光受激发光 (OSL) 衰减曲线讨论了辐射发光信号。