Abstract To protect the human from the γ–radiation hazard, the novel shielding materials are ever-demanding in the field of nuclear medicine. In this research, we assessed the mass attenuation coefficient (μ/ρ), mean atomic number ( ), effective atomic cross-section (σa), atomic number (Zeff) plus electron number (Neff) of the pure epoxy, Al2O3-epoxy (6 and 15 wt%) and Fe2O3-epoxy/(6 and 15 wt%) exposed to various energies of γ-rays (0.662, 1.173 and 1.333 MeV). The NaI detector was used for the gamma rays detection. The experimental results revealed good agreement with the theoretical values obtained using the WinXCOM program. The μ/ρ values showed inverse correlation whereas Zeff and Neff revealed direct correlation in the studied γ-ray energy range. The proposed epoxy nanocomposites are established to be useful for the development of improved γ–radiation shielding.

中文翻译：

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改善环氧复合材料的伽马辐射屏蔽特性：评估质量衰减系数、有效原子数和电子数

摘要 为保护人类免受γ辐射危害，核医学领域对新型屏蔽材料的需求不断增加。在这项研究中，我们评估了纯环氧树脂 Al2O3-epoxy 的质量衰减系数 (μ/ρ)、平均原子序数 ( )、有效原子截面 (σa)、原子序数 (Zeff) 加电子数 (Neff) (6 和 15 wt%) 和 Fe2O3-环氧树脂/(6 和 15 wt%) 暴露于各种能量的 γ 射线（0.662、1.173 和 1.333 MeV）。NaI探测器用于伽马射线探测。实验结果表明与使用 WinXCOM 程序获得的理论值非常吻合。μ/ρ 值显示出负相关，而 Zeff 和 Neff 在研究的 γ 射线能量范围内显示出直接相关。