Plastic materials as a radiation shield for β− sources: a comparative study through Monte Carlo calculation
Plastic materials as a radiation shield for β− sources: a comparative study through Monte Carlo calculation
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塑料材料作为 β− 源辐射屏蔽：通过蒙特卡罗计算的比较研究
DOI：
10.1088/0952-4746/29/2/010
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发表时间：
2009
影响因子：
1.5
通讯作者：
D. Lizio
中科院分区：
文献类型：
--
作者：
E. Amato;D. Lizio
我们在Geant4中开发了蒙特卡罗模拟，比较了不同类型的塑料材料作为β -放射源的屏蔽材料的衰减特性和轫致辐射产率。给出了针对Sandia和NIST数据的代码验证结果。对于聚丙烯（C3H6）、聚苯乙烯（C2H3）、聚酰胺尼龙-6 （C6H11ON）、聚甲基丙烯酸甲酯（C5H8O2）、聚碳酸酯（C16H6O3）、聚对苯二甲酸乙二醇酯（C10H8O4）、聚氯乙烯（C2H3Cl）和聚四氟乙烯（C2F4），我们评估了源自90Sr和90Y的电子的平均和最大范围，以及产生的轫致辐射x射线的数量和光谱。各种材料之间存在显著差异，最佳材料的选择也取决于每种特定应用所要求的物理性能。
We have developed a Monte Carlo simulation in Geant4 to compare the attenuation properties and the bremsstrahlung radiation yield of different types of plastic materials employed as shields for β− radioactive sources. Code validation results against Sandia and NIST data are presented. For polypropylene (C3H6), polystyrene (C2H3), polyamide nylon-6 (C6H11ON), poly-methyl methacrylate (C5H8O2), polycarbonate (C16H6O3), polyethylene terephthalate (C10H8O4), polyvinyl chloride (C2H3Cl) and polytetrafluoroethylene (C2F4) we evaluated the mean and maximum ranges for electrons originating from 90Sr and 90Y, as well as the number and spectrum of the bremsstrahlung x-rays produced. Significant differences appear between the various materials, and the choice of the best one also depends on the physical properties requested for each specific application.