论文标题
伽玛衰减参数
Gamma attenuation parameters of some borate glasses
论文作者
论文摘要
In this study we have reported the borate-based glasses in the form of $4(75 - x)B-2O-3 - xBi_2O_3 - 10Na_2O - 10CaO - 5Al_2O_3$ ($0 \le x \le 25$ mol%) for gamma-ray and neutron shielding applications, and for this purpose mass attenuation coefficients of these glasses have been investigated using Geant4 code and XCOM program in the能量范围在1 KEV和10 MEV之间。观察到模拟结果与计算值之间的良好一致性。然后使用所获得的值计算其他相关的屏蔽参数，例如半值层（HVL），平均自由路径（MFP）和有效的原子数（$ z _ {\ rm eff} $）。还使用几何进程（G-P）方法评估了眼镜的暴露因子。另外，已经计算了每个选定玻璃的中子有效去除横截面。结果表明，玻璃样品中的BI2O3含量会影响辐射屏蔽特性。可以得出结论，编码为F的玻璃提供了出色的伽马射线屏蔽特性，而编码为D的玻璃在其他样品中提供了更好的中子屏蔽功能。
In this study we have reported the borate-based glasses in the form of $4(75 - x)B-2O-3 - xBi_2O_3 - 10Na_2O - 10CaO - 5Al_2O_3$ ($0 \le x \le 25$ mol%) for gamma-ray and neutron shielding applications, and for this purpose mass attenuation coefficients of these glasses have been investigated using Geant4 code and XCOM program in the energy range between 1 keV and 10 MeV. A good agreement between the simulation results and computed values was observed. The obtained values were then used to calculate the other related shielding parameters such as half value layer (HVL), mean free path (MFP) and effective atomic numbers ($Z_{\rm eff}$). Exposure buildup factors of the glasses were also evaluated by using the geometrical progression (G-P) method. Additionally, neutron effective removal cross-sections of each selected glass have been computed. The results indicate that the Bi2O3 content in the glass sample affects the radiation shielding properties. It can be concluded that the glass coded as F offers superior gamma-ray shielding properties, while the glass coded as D offers better neutron shielding features among the other samples.
