稀土尾渣中元素质量占比对空气γ吸收剂量率的影响  

Effect of the Element Mass Ratio in Rare Earth Tailings on Air γ Absorbed Dose Rate

作　　者：赵辉庭 王攀[2] 李向阳[1] 杨明理[2] 唐林军 ZHAO Hui-ting;WANG Pan;LI Xiang-yang;YANG Ming-li;TANG Lin-jun(University of South China, Hengyang 421001, China;Beijing Research Institute of Chemical Engineering and Metallurgy, CNNC, Beijing 101149, China)

机构地区：[1]南华大学,湖南衡阳421001 [2]核工业北京化工冶金研究院,北京101149

出　　处：《铀矿冶》2019年第1期85-88,共4页Uranium Mining and Metallurgy

摘　　要：运用蒙特卡洛模拟软件MCNP5,研究了稀土尾渣中元素Ce、La、Nd、Pb、Th、U、Zr质量占比的测量误差对尾渣桶周围空气γ吸收剂量率的影响。对7种元素不同质量占比下的空气γ吸收剂量率进行了计算,并计算元素质量占比变化后的空气γ吸收剂量率与实际质量占比下空气γ吸收剂量率测量值的相对偏离,进而确定尾渣质量占比变化对于模拟计算结果的影响。研究表明,Th元素质量占比变化对于模拟结果影响较大,其他元素质量占比变化对于模拟结果的影响较小。Study on the mass fraction measuring error of elements Ce,La,Nd,Pb,Th,U,Zr in rare earth tailing to the effect of ambient air of tailing barrel was carried out by the application of Monte Carlo simulation software MCNP5.The air γ absorbed dose of the 7 elements with different mass fraction around the barrel containing the tailings was calculated.The relative deviation of γ absorbed dose rate of mass fraction changes to the original mass fraction γ absorbed dose rate was calculated too.And then the mass fraction change to effect of simulation calculation results was determined.The results show that the proportion of Th elements has a greater impact on the simulation results,while the proportion of other elements has a smaller impact on the simulation results.

关 键 词：元素质量占比 MCNP5 空气γ吸收剂量率 相对偏离 

分 类 号：X837[环境科学与工程—环境工程] TL817.2[核科学技术—核技术及应用]