In this study, CdS doped polyester composites were produced at different weight ratios, and the impact of dopant amount on gamma and neutron shielding characteristics of a new composite material were further evaluated: the composite matrix was doped at 5%, 10%, 15% and 20% CdS weight ratios of the prepared composite. Then, the produced polyester materials have been characterized using a scanning electron microscope (SEM) and X-ray diffraction (XRD) patterns. Following the structure characterization, the prepared composites were tested using one gamma spectrometer system based HPGe detector with help of ²²Na, ⁵⁴Mn, ⁵⁷Co, ⁶⁰Co, ¹³³Ba, ¹³⁷Cs, ¹⁵²Eu and ²⁴¹Am radioactive point-isotropic sources in order to perform the evaluation in a wide energy range of gamma. The obtained results were compared to the results of Geant4 and WinXCOM simulation codes. On the last step of the presented work, the neutron removal cross sections of produced polyester composites were calculated using partial density of elements and their cross sections, and then, neutron shielding characteristics of the prepared samples were determined with help of Geant4 simulation toolkit. Both tested and simulated results of gamma shielding evaluation showed good agreement, and, for all considered photon energies, mass attenuation coefficient (μ/ρ) values of CdS (20%) were always found to be greater than the μ/ρ values of other samples (5%, 10%, 15%). The results for neutron shielding showed that neutron transmission was decreasing with the increase of CdS in the material. In short, having higher μ/ρ values and lower neutron transmission shows that increasing the amount of CdS in the sample causes the higher radiation shielding property for both gamma and neutron.

本研究制备了不同重量比的CdS掺杂聚酯复合材料，进一步评估了掺杂量对新型复合材料伽马和中子屏蔽特性的影响：复合基体的掺杂量为5%、10%、15%和 20% 的 CdS 重量比制备的复合材料。然后，使用扫描电子显微镜 (SEM) 和 X 射线衍射 (XRD) 图案对生产的聚酯材料进行了表征。在结构表征之后，在²² Na、⁵⁴ Mn、⁵⁷ Co、⁶⁰ Co、¹³³ Ba、¹³⁷ Cs、¹⁵² Eu 和²² Na、⁵⁴ Mn、⁵⁷ Co、⁶⁰ Co、¹³³ Ba 、¹⁵² Eu 和²⁴¹Am 放射性点各向同性源，以便在较宽的伽马能量范围内进行评估。将得到的结果与Geant4 和WinXCOM 仿真代码的结果进行了比较。在本工作的最后一步，使用元素的局部密度及其截面计算所生产的聚酯复合材料的中子去除截面，然后借助 Geant4 模拟工具包确定所制备样品的中子屏蔽特性。伽马屏蔽评估的测试和模拟结果均显示出良好的一致性，并且对于所有考虑的光子能量，CdS (20%) 的质量衰减系数 (μ/ρ) 值总是大于其他物质的 μ/ρ 值。样本（5%、10%、15%）。中子屏蔽的结果表明，随着材料中CdS的增加，中子传输率降低。简而言之，具有较高的 μ/ρ 值和较低的中子透射率表明，增加样品中 CdS 的量会导致对伽马和中子的辐射屏蔽性能更高。