用于电离辐射屏蔽的可持续材料性能研究
Study of the properties of sustainable materials for shielding against ionizing radiations
- Laboratoire de Physique Subatomique et de Cosmologie, Université Grenoble-Alpes, CNRS-IN 2 P 3(亚原子物理与宇宙学实验室,格勒诺布尔阿尔卑斯大学,法国国家科学研究中心)
机构由 AI 辅助整理,请以论文原文为准。
AI总结:
该研究比较混凝土与夯土对光子的屏蔽效果,发现密度差异导致夯土需增加20%厚度,低能时成分和含水量影响显著。
AI中文摘要:
SuShi项目旨在确定如何使用可持续材料来屏蔽电离辐射。本文贡献在于比较了混凝土和夯土对光子的影响。在能量约为兆电子伏特(MeV)时,康普顿散射相互作用占主导,材料成分的变化几乎不产生影响。密度差异导致需要增加20%的厚度,夯土才能达到与混凝土相同的通量衰减效果。在更高能量下,光子产生电磁簇射,也发现了相同的数值。低于0.1 MeV时,材料成分和土壤含水量变得重要,但衰减效果显著更大。
英文摘要:
The SuShi project aims at determining how sustainable materials can be used to shield against ionizing radiations. This contribution presents a comparison of the effect of concrete and rammed raw earth on photons. For energies around the MeV, where interactions by Compton scattering dominate, changes in the material composition have virtually no effect. The density difference results in 20% more thickness needed for earth to achieve the same flux attenuation as concrete. The same value is found for higher energies, where photons produce electromagnetic showers. Below 0.1 MeV, material composition and earth moisture content matter but the attenuation is much larger.