γ射线穿过UF_6后周围剂量当量累积因子的模拟计算  

Monte Carlo Calculation of Buildup Factor for Ambient Dose Equivalent due to Passing of Gamma-ray throuth UF_6

作　　者：花正东[1] 王德忠[1] 税际天[1] 王方[1] 徐进财[1] 陈继亮[2] 

机构地区：[1]上海交通大学,上海200240 [2]上海市环境保护局,上海200003

出　　处：《辐射防护通讯》2012年第6期19-22,共4页Radiation Protection Bulletin

摘　　要：采用EGS5蒙特卡罗程序计算了γ射线穿过UF6材料后的周围剂量当量累积因子。计算给出了50 keV～3MeV范围,1～10平均自由程下的光子周围剂量当量累积因子,并给出了与计算值符合度较好的参数化拟合公式。计算结果将便于采用线性减弱系数对涉及UF6材料的剂量计算。In this study, EGS5 Monte Carlo code was used to calculate the buildup factor for ambient dose equivalent due to the passing of gamma-ray through uranium hexafluoride with photon energy range of 50 keV to 3 MeV and depth of 1-10 mean free path. The fitted formulae were also given based on Origin software for cal- culating ambient dose equivalent related to UF6 material. The results from fitted formulae show a good agree- ment with calculated values.

关 键 词：周围剂量当量 累积因子 UF6 

分 类 号：R144.1[医药卫生—公共卫生与预防医学]