Abstract Thermoluminescence (TL) properties of LiF: Sm3+ (0.05 mol%) co-doped with Eu3+ (0.02, 0.04, 0.06, 0.08 mol%) nanophosphor for the applications of TL dosimetry have been studied. The nanophosphors have been synthesized by chemical co-precipitation method at 8 pH value. The phase purity of the prepared samples has been confirmed by using X-ray diffraction (XRD) data. The XRD peaks broadening revealed the formation of the nanostructure, complemented by the TEM image. For TL studies, the samples have been irradiated with gamma rays using 60Co source in the irradiation dose range of 0.1 kGy to 30 kGy. In gamma exposed samples, the TL glow curve consists of single glow peak at 410 K and three shoulder peaks at 475 K, 550 K and 632 K. The dosimetry properties such as the effects of exposure doses, heating rates and fading characteristics have also been studied. The kinetic parameters such as activation energy (E), the frequency factors (s) and order of kinetic (b) of the glow curves have also been calculated by using Chen's peak shape method. The linear behavior of TL intensity with radiation doses and low fading shows that the LiF: Sm3+, Eu3+ Nanophosphor is a potential candidate for dosimetry applications.

中文翻译：

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用于剂量测定应用的暴露于伽马射线的 LiF：Sm 3+ 、Eu 3+ 纳米磷光体的热释光和动力学参数研究

摘要 研究了 LiF: Sm3+ (0.05 mol%) 与 Eu3+ (0.02, 0.04, 0.06, 0.08 mol%) 纳米磷光体共掺杂用于 TL 剂量测定的热致发光 (TL) 特性。纳米磷光体是通过化学共沉淀法在 8 pH 值下合成的。所制备样品的相纯度已通过使用 X 射线衍射 (XRD) 数据确认。XRD 峰变宽揭示了纳米结构的形成，并辅以 TEM 图像。对于 TL 研究，样品已使用 60Co 源在 0.1 kGy 至 30 kGy 的照射剂量范围内用伽马射线照射。在伽马暴露样品中，TL 辉光曲线由 410 K 处的单个辉光峰和 475 K、550 K 和 632 K 处的三个肩峰组成。还研究了加热速率和褪色特性。辉光曲线的活化能 (E)、频率因子 (s) 和动力学阶数 (b) 等动力学参数也已使用 Chen 的峰形法计算得到。TL 强度与辐射剂量和低衰落的线性行为表明 LiF: Sm3+、Eu3+ 纳米磷光体是剂量学应用的潜在候选者。