采用BH1324多道及BH1220智能定标器等设备测量了2种型号的镍合金和铅对不同能量γ射线的吸收系数.实验结果表明,镍合金对γ射线的质量吸收系数随能量的增加减少较缓慢,在能量较高的区域质量吸收系数与铅的相近,因此可用镍合金作为γ射线的屏蔽材料.%The absorption coefficients of different energy gamma - ray on the two types of nickel alloy and lead are measured by BH1324 and BH1220 devices. The experimental results show that the mass - absorption coefficient of nickel alloy decreases slowly with the increase of gamma - ray energy, and the values are close to these of lead in the higher energy region. So nickel alloys are suitable to replace lead as the shielding materials for gamma rays.
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