The Microdosimetric d(z) Model was used in combination with simulated microdosimetric specific energy probability distributions for monoenergetic ¹H and ⁴He ions (energy range = 0.1–1000 MeV/n, target size range = 1–2000 nm) to investigate the possibility of modeling the relative efficiency of two optical absorption (OA) bands (4.77 and 5.08 eV) in the OA energy spectra of LiF:Mg,Ti (TLD-100) thermoluminescent detectors. This work represents the first application of the model to a physical system other than thermally- and optically-stimulated luminescence.

The 4.77 eV OA trap is populated by electrons liberated during irradiation and its experimental OA relative efficiency was successfully predicted using a target size of 9 nm in the simulations. On the other hand, the model was not able to reproduce the values of the experimentally-observed proton induced OA efficiency above unity for the 5.08 eV OA band associated with the F centers in LiF:Mg,Ti (electron occupied Fluoride vacancy). The F centers are initially present in the LiF lattice but are also created by the irradiation. Since the absence of defect creation by the irradiation is a necessary condition of the microdosimetric model, the discrepancy between the model results for the F band and the experimental data was not unexpected.

The calculations for both OA bands are presented as a function of the particle energy and the simulated microdosimetric target size and will be useful in further applications of the model OA relative efficiencies for charged particles.

微剂量 d(z) 模型与单能¹ H 和⁴ He 离子（能量范围 = 0.1–1000 MeV/n，目标尺寸范围 = 1–2000 nm）的模拟微剂量比能量概率分布结合使用，以研究可能性模拟 LiF:Mg,Ti (TLD-100) 热释光探测器 OA 能谱中两个光吸收 (OA) 带（4.77 和 5.08 eV）的相对效率。这项工作代表了该模型首次应用于物理系统而不是热和光刺激发光。

4.77 eV OA 陷阱由辐射期间释放的电子填充，并且在模拟中使用 9 nm 的目标尺寸成功预测了其实验 OA 相对效率。另一方面，对于与 LiF:Mg,Ti（电子占据的氟化物空位）中的 F 中心相关的 5.08 eV OA 带，该模型无法重现实验观察到的质子诱导的 OA 效率高于统一的值。F 中心最初存在于 LiF 晶格中，但也由辐射产生。由于不存在由辐照产生的缺陷是微剂量模型的必要条件，因此 F 带的模型结果与实验数据之间的差异并不出乎意料。

两个 OA 波段的计算均作为粒子能量和模拟微剂量目标尺寸的函数呈现，并将用于带电粒子 OA 相对效率模型的进一步应用。