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基于MCNP程序和γ射线能谱法对未知材料线吸收系数的测定

Science Technology and Engineering(2013)

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Abstract
为了计算某未知介质对γ射线的线吸收系数,建立了两种模型:首先用MCNP程序和γ射线能谱法测量了不同能量射线下铅、铝线吸收系数,并与文献值进行对比,测量误差在5%以内,明确了方法的可行性。然后分别用两种方法计算了未知物料在60Co源下的线吸收系数,结果偏差为4.53%,可以确认计算结果的准确性,为γ射线在未知物料中线吸收系数的测定提供了可靠的方法。
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MCNP program γ-ray energy spectrum analysis line absorption coefficient
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