ABSTRACT In this paper, the radiation shielding parameters such as linear attenuation coefficients (LAC, µ), mass attenuation coefficients (MAC, µ/ρ), effective atomic numbers (Zeff), effective electron densities (Neff), half value of layers (HVL), mean free paths (MFP) and buildup factors (exposure (EBF) and energy absorption (EABF)) were investigated for cream (M1), pink (M2), white (M3), maroon (M4) and green (M5) marbles. Attenuation coefficients were measured in the energy region 31.18–661.66 keV photon energies. The values of Zeff and Neff were then calculated using these coefficients with logarithmic interpolation method, and HVLs and MFPs were calculated using the values of LAC of marble samples at the same photon energies. The experimental results were compared with the theoretical values obtained from WinXCom program, and good agreements were observed between the experimental and theoretical results. HVLs and MFPs of all marble samples were compared with those of some concretes, glasses and commercial radiation shielding glasses (SCHOTT Co.). The studied marbles were better radiation shielding materials than standard shielding concretes due to lower HVL and MFP values lower than the ordinary concrete. Finally, EBFs and EABFs of the marbles were calculated in the energy region 0.015–1 MeV up to penetration depths of 40 mfps by Geometric Progression method (G-P), and the results were discussed in terms of photon energies and chemical compositions of the marbles.

中文翻译：

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白色和一些彩色大理石作为应用的替代辐射屏蔽材料

摘要 在本文中，辐射屏蔽参数如线性衰减系数 (LAC, µ)、质量衰减系数 (MAC, µ/ρ)、有效原子序数 (Zeff)、有效电子密度 (Neff)、层半值 (研究了奶油色 (M1)、粉色 (M2)、白色 (M3)、栗色 (M4) 和绿色 (M5) 的 HVL)、平均自由程 (MFP) 和累积因子（曝光 (EBF) 和能量吸收 (EABF)） ) 弹珠。衰减系数在 31.18-661.66 keV 光子能量范围内测量。然后使用这些系数和对数插值法计算 Zeff 和 Neff 的值，并使用相同光子能量下大理石样品的 LAC 值计算 HVL 和 MFP。将实验结果与WinXCom程序得到的理论值进行比较，并且在实验和理论结果之间观察到良好的一致性。将所有大理石样品的 HVL 和 MFP 与一些混凝土、玻璃和商业辐射屏蔽玻璃（肖特公司）的 HVL 和 MFP 进行比较。由于比普通混凝土更低的 HVL 和 MFP 值，所研究的大理石是比标准屏蔽混凝土更好的辐射屏蔽材料。最后，通过几何渐进法 (GP) 在 0.015-1 MeV 的能量范围内计算了大理石的 EBF 和 EABF，最高穿透深度为 40 mfps，并根据大理石的光子能量和化学成分对结果进行了讨论。眼镜和商用防辐射眼镜（肖特公司）。由于比普通混凝土更低的 HVL 和 MFP 值，所研究的大理石是比标准屏蔽混凝土更好的辐射屏蔽材料。最后，通过几何级数法 (GP) 在 0.015-1 MeV 能量范围内计算了大理石的 EBF 和 EABF，直至穿透深度为 40 mfps，并根据大理石的光子能量和化学成分对结果进行了讨论。眼镜和商用防辐射眼镜（肖特公司）。由于比普通混凝土更低的 HVL 和 MFP 值，所研究的大理石是比标准屏蔽混凝土更好的辐射屏蔽材料。最后，通过几何渐进法 (GP) 在 0.015-1 MeV 的能量范围内计算了大理石的 EBF 和 EABF，最高穿透深度为 40 mfps，并根据大理石的光子能量和化学成分对结果进行了讨论。