混凝土墙体防辐射砂浆的蒙特卡罗研究  

Research on Anti- radiation Mortar on the Concrete Wall by Monte Carlo Method

作　　者：唐碧华[1] 郑尚彬[1] 罗亚梅[1] 许标[1] 朱渊[1] 

机构地区：[1]泸州医学院生物医学工程系,泸州646000

出　　处：《核电子学与探测技术》2014年第7期874-877,882,共5页Nuclear Electronics & Detection Technology

基　　金：泸州医学院自然科学基金资助(2012QN-07)

摘　　要：分别选取重晶石、钨酸铅和Ba Pb0.75Bi0.25O3这三种不同的防辐射填料按照一定的比例掺和到砂浆基材中,得到不同的防辐射砂浆。针对天然放射系铀系、锕系和钍系放出的特征γ射线,采用蒙特卡罗数值模拟方法计算了防辐射砂浆混凝土墙体的γ射线透射率与线性衰减系数。结果表明,三种不同防辐射砂浆对γ射线均有一定的防护作用,其中钨酸铅砂浆对γ射线的防护性能最好,且砂浆层厚度越厚,防护效果越好。By stuffing barite, lead tungstate and BaPb0.75 Bi0.25 O3 respectively to the mortar substrate according to certain proportion, three different anti-radiation mortars are obtained.Theγray transmissibility and the linear attenuation coefficient of the anti-radiation mortar concrete wall for these characteristic γrays emitted from natural radioactive series such as uranium, actinide and thorium are calculated by Monte Carlo numerical simu-lation method.It is shown that three different anti-radiation mortars play a role in preventingγrays, where it is the best with the tungstate mortar, and the thicker mortar layer is better in the prevention.

关 键 词：蒙特卡罗 防辐射砂浆 Γ射线 透射率 线性衰减系数 

分 类 号：O411.3[理学—理论物理]