摘要
利用蒙特卡罗方法模拟137Cs产生的γ射线通过含不同比例的含Ba化工厂污泥的混泥土的质量衰减系数。在模拟过程中将同一含量的集料介质分别设置成均匀和非均匀二种状态,分别计算其质量衰减系数。通过模拟分析均匀和非均匀二种不同状态下的集料,研究发现二者模拟结果相差较大。由于正交交互实验中多因子影响的原因,通过MC方法模拟显得尤为重要。研究结果表明:含14%Ba O集料的屏蔽性能优于其他组分的集料,与重金属材料的屏蔽效果规律一致。对比得到屏蔽性能较好的集料配比,以及相应的有效屏蔽厚度,同时为需要良好的防辐射建筑材料的核电站提供了理论指导依据。
Using 137Cs to generated the γ rays and by the Monte Carlo simulation and calculate the different pro- portions contained barium element of concretes. In the simulation, the content of aggregates will be the make to a uniform and non-uniform respectively two states, the absorption coefficient were calculated that uniform and non-u- niform through simulation analysis of two different states aggregates. The two simulation results were quite different, which will guide future research work. It is particularly important by MC simulation method for the interaction of or- thogonal muhi-factor experiments reason. The results show that thecontained 14% BaO aggregates radiation shiel- ding effect performance better than other aggregates. It is consistent with the laws of the shielding effect of heavy metal material, and resulting in the best ratio of radiation aggregate shielding and the effective shield thickness, it will guid the next interaction of orthogonal experimental research and provid a theoretical basis for the need of good radiation protection of nuclear materials.
出处
《科学技术与工程》
北大核心
2015年第23期148-151,共4页
Science Technology and Engineering
基金
国家自然科学基金(51272192)资助
关键词
钡元素
集料
屏蔽效应
蒙特卡罗
质量衰减系数
barium element
aggregate
radiation shielding effect
MCNP
the mass attenuation coefficient
