Accidents resulting in widespread dispersal of radioactive materials have given rise to a need for materials that are convenient in allowing individual dose assessment. The present study examines natural Dead Sea salt adopted as a model thermoluminescence dosimetry system. Samples were prepared in two different forms, loose-raw and loose-ground, subsequently exposed to ⁶⁰Co gamma-rays, delivering doses in the range 2–10 Gy. Key thermoluminescence (TL) properties were examined, including glow curves, dose response, sensitivity, reproducibility and fading. Glow curves shapes were found to be independent of given dose, prominent TL peaks for the raw and ground samples appearing in the temperature ranges 361–385 ºC and 366–401 ºC, respectively. The deconvolution of glow curves has been undertaken using GlowFit, resulting in ten overlapping first-order kinetic glow peaks. For both sample forms, the integrated TL yield displays linearity of response with dose, the loose-raw salt showing some 2.5 × the sensitivity of the ground salt. The samples showed similar degrees of fading, with respective residual signals 28 days post-irradiation of 66% and 62% for the ground and raw forms respectively; conversely, confronted by light-induced fading the respective signal losses were 62% and 80%. The effective atomic number of the Dead Sea salt of 16.3 is comparable to that of TLD-200 (Z_eff 16.3), suitable as an environmental radiation monitor in accident situations but requiring careful calibration in the reconstruction of soft tissue dose (soft tissue Z_eff 7.2). Sample luminescence studies were carried out via Raman and Photoluminescence spectroscopy as well as X-ray diffraction, ionizing radiation dependent variation in lattice structure being found to influence TL response.

导致放射性物质广泛散布的事故引起了对方便进行单独剂量评估的材料的需求。本研究研究了天然死海盐被用作模型热发光剂量测定系统。样品以两种不同的形式制备：松散的和松散的，然后暴露于⁶⁰伽玛射线，剂量范围为2-10 Gy。检查了关键的热致发光（TL）特性，包括发光曲线，剂量响应，灵敏度，再现性和褪色。发现辉光曲线的形状与给定的剂量无关，原始样品和磨碎样品的显着TL峰分别出现在361–385ºC和366–401ºC的温度范围内。使用GlowFit对辉光曲线进行了反褶积处理，从而产生了十个重叠的一阶动力学辉光峰。对于这两种样品形式，总的TL收率都显示出随剂量变化的线性关系，散生盐显示出约2.5倍于底盐的敏感性。样品显示出相似的褪色程度，分别为地面和原始形式，分别在辐照后28天和66％分别为62％和62％。反过来，面对由光引起的衰落，相应的信号损耗分别为62％和80％。死海盐的有效原子序数为16.3与TLD-200（Z_eff 16.3），适合作为事故情况下的环境辐射监测器，但在重建软组织剂量时需要仔细校准（软组织Z _eff 7.2）。通过拉曼光谱和光致发光光谱以及X射线衍射进行了样品发光研究，发现电离辐射依赖的晶格结构变化会影响TL响应。