We report investigations carried out on radiophotoluminescence (RPL) response of Eu³⁺ doped CaSO₄ phosphor using an in-house developed compact system for gamma dosimetry. The system comprises a sample holder to hold 200 mg phosphor powder having particle sizes 90–212 µm in the disc form (15 mm dia, 1 mm thick) and a microcontroller-based reader with Hamamatsu PMT (H10720-110) for collection of emitted luminescence. Conversion of Eu³⁺ to Eu²⁺ on gamma irradiation in phosphor samples is studied with 320 nm UVLED (FWHM 10 nm) stimulation. The performance of the system is evaluated in 100 mGy to 10,000 mGy gamma dose range and a linear response is observed. The dosimetric properties of synthesized phosphor in terms of gamma dose response, reproducibility, dose rate response, relative photon energy dependence and fading are reported.

我们报告了使用内部开发的用于伽玛剂量测定的紧凑型系统对Eu ³⁺掺杂的CaSO ₄荧光粉进行的放射光致发光（RPL）反应的研究。该系统包括一个样品架，该样品架以圆盘形式（直径15 mm，厚度1 mm）容纳粒径为90–212 µm的200 mg磷光体粉末，以及带有Hamamatsu PMT（H10720-110）的基于微控制器的读取器，用于收集发射的光。发光。Eu ³⁺到Eu ^2+的转化用320 nm UVLED（FWHM 10 nm）刺激研究了荧光粉样品中的γ辐射。在100 mGy至10,000 mGyγ剂量范围内评估系统的性能，并观察到线性响应。报告了合成磷光体在伽马剂量响应，重现性，剂量率响应，相对光子能量依赖性和褪色方面的剂量学特性。