| γ-ray self-absorption of cylindrical fissile material |
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| 作者姓名： | HUANGYong-Yi CHENGYi-Ying TIANDong-Feng LUFu-Quan YANGFu-Jia |
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| 作者单位： | [1]InstituteofModernPhysics,FudanUniversity,Shanghai200433 [2]DepartmentofPhysics,UniversityofRhodeIstand,Kingston,RI02881-0817,U.S.A [3]InstituteofModernPhysics,FudanUniversity,Shanghai200433／／InstituteofAppliedPhysicsandComputationalMathematics,P.O.Box8009,Beijing100088 |
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| 摘 要： | The self-absorption of γ-ray emitted from cylindrical fissile materials, such as ^235U and ^239Pu. does not possess spherical symmetry. The analytical formulae of self-absorption for y-ray throughout the cylinder have been obtained. The intensity of γ-ray is a function of y-ray outgoing directions and cylindrical configorations, accordingly one can acquire the information about geometrical configuration of cylindrical fissile materials through multi-location measurements. Further more. the method is given in this article, The result can be applied to the fissile material safeguard, such as nuclear monitoring and verifying.
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| 关 键 词： | γ-射线自吸收 核能燃料 分裂物质 同位素成分 多段测量 |
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