Shielding effectiveness of boron-containing ores in Liaoning province of China against gamma rays and thermal neutrons  

作　　者：Meng-Ge Dong Xiang-Xin Xue V.P.Singh He Yang Zhe-Fu Li M.I.Sayyed 

机构地区：[1]Department of Resource and Environment, School of Metallurgy, Northeastern University, Shenyang 110819,China [2]Department of Physics, Karnatak University,Dharwad 580003, India [3]Shanghai Institute of Applied Physics, Shanghai 201800,China [4]Physics Department, University of Tabuk, Tabuk, Saudi Arabia

出　　处：《Nuclear Science and Techniques》2018年第4期155-162,共8页核技术（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.51472048,50774022);the Key Laboratory Project of Liaoning Province Education Office(No.LZ 2014-022)

摘　　要：In this study, the mass attenuation coefficient of boron-containing ores in the Liaoning province of China was calculated using Win XCOM software to investigate the shielding effectiveness of these ores against gamma rays. The mass attenuation coefficients were also calculated using MCNP-4 B code and compared with Win XCOM results; consequently, a good consistency between the results of Win XCOM and MCNP-4 B was observed. Furthermore, the G-P fitting method was used to evaluate the values of exposure buildup factor(EBF) in the energy range of 0.015–15 Me V up to 40 mean free paths. Among the selected ores, boron-bearing iron concentrate ore(M3)was determined to be the best gamma ray shielding ore owing to its higher values of mass attenuation coefficient and equivalent atomic number and lower value of EBF.Moreover, American Evaluated Nuclear Data File(ENDF/B-VII) was used to analyze the shielding effectivenessagainst thermal neutrons. It was determined that Szaibelyite(M2) is the best thermal neutron shielding material.This study would be useful for demonstrating the potential of boron-containing ores for applications in the field of nuclear engineering and technology.In this study, the mass attenuation coefficient of boron-containing ores in the Liaoning province of China was calculated using Win XCOM software to investigate the shielding effectiveness of these ores against gamma rays. The mass attenuation coefficients were also calculated using MCNP-4 B code and compared with Win XCOM results; consequently, a good consistency between the results of Win XCOM and MCNP-4 B was observed. Furthermore, the G-P fitting method was used to evaluate the values of exposure buildup factor(EBF) in the energy range of 0.015–15 Me V up to 40 mean free paths. Among the selected ores, boron-bearing iron concentrate ore(M3)was determined to be the best gamma ray shielding ore owing to its higher values of mass attenuation coefficient and equivalent atomic number and lower value of EBF.Moreover, American Evaluated Nuclear Data File(ENDF/B-VII) was used to analyze the shielding effectivenessagainst thermal neutrons. It was determined that Szaibelyite(M2) is the best thermal neutron shielding material.This study would be useful for demonstrating the potential of boron-containing ores for applications in the field of nuclear engineering and technology.

关 键 词：Exposure BUILDUP factors Gamma ray Neutron Boron-containing ORES G-P fitting method 

分 类 号：TL[核科学技术]