MC模拟计算混凝土的γ射线衰减参数  

Calculation RaγAttenuation Parameter of Concrete by MC Simulation

作　　者：余明 李晓玲[1] 吴荣俊[1] 陈祥磊[1] 左亮周[1] 郭智荣[1] YU Ming;LI Xiao-ling;WU Rong-jun;CHEN Xiang-lei;ZUO Liang-zhou;GUO Zhi-rong(Wuhan Second Ship Design and Research Institute,Wuhan 430060,China)

机构地区：[1]武汉第二船舶设计研究所,武汉430060

出　　处：《核电子学与探测技术》2023年第2期307-312,共6页Nuclear Electronics & Detection Technology

基　　金：国家重点研发计划(2017YFC0307800)。

摘　　要：利用MC模拟计算了不同混凝土的γ射线衰减参数,并与文献中XCOM计算的数值对比,结果符合性较好。基于此模型,结合复合材料的均匀填充模型,研究了50%含量不同粒径的WO_(3)对混凝土材料在663 keV能量下的衰减系数。结果表明,WO_(3)颗粒越均匀细小,衰减系数越大,粒径100 nm比1 mm的WO_(3)对复合材料的质量衰减系数提高了8.94%。Through the Monte-Carlo method,gamma-ray attenuation parameters of seven different concretes by MCNP program are calculated,which are in good agreement with those calculated by XCOM in the references.The model can be applied to quick calculation of the attenuation parameters of narrowγof materials.Using this gamma-ray attenuation calculation model combining with the uniform flling model of composite materials,the attenuation parameters of concrete materials with different diameters of 50%WO_(3)under 663 keV energy are studied.The results show that the more uniform and smaller the WO_(3)particle size is,the larger the attenuation coefficient is,and the mass attenuation coefficient of composite materials with WO_(3)with a diameter of 100 nm is improved by 8.94%compared with 1mm.

关 键 词：MC法 混凝土 Γ射线 衰减参数 

分 类 号：TB333[一般工业技术—材料科学与工程]