摘要
理论计算了Q345R、0Cr18Ni9、2A12、玻纤复合板和芳纶复合板五种材料对γ射线的衰减系数。结果表明:在相同厚度下,纤维复合板对γ射线的衰减系数均小于Q345R、0Cr18Ni9和2A12的衰减系数,芳纶复合板的衰减系数仅为Q345R衰减系数的20%。同时,利用60Co辐射装置测定了2A12、玻纤复合板和芳纶复合板对γ射线的衰减系数,实测值与理论估算值基本一致。此外,还比较了不同材料的受压筒体对γ射线的衰减性能,结果显示:纤维复合材料的筒体对γ射线有良好的透过性。
This paper focuses on the theoretical calculation ofγ-ray attenuation coefficient for some vessel materials,which include Q345 R,0Cr18Ni9,2A12,glassfiber composite plate and Kevlar composite plate.The results show that the attenuation coefficient of the fiber composite plate is less than those of Q345 R,0Cr18Ni9,2A12 with the same thickness.The attenuation coefficient of Kevlar is only 20 percent of Q345 R.The theoretical results of three materials,i.e.2A12,glassfiber,and Kevlar are consistent with the measured results tested by 60 Co radiation.Moreover,the performances of attenuation of cylinder with different materials to γ-ray are compared,and the results show that the cylinder made of fiber composite is endowed with betterγ-ray radiability than cylinders made of other materials.
出处
《现代应用物理》
2017年第3期47-51,共5页
Modern Applied Physics
关键词
Γ射线
衰减系数
压力容器
γ-ray
attenuation coefficient
pressure vessel
