Distortion of Neutron Collision Density due to Resonance Scattering and Absorption

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概要

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• An analytical method for obtaining the collision density and the resonance integral in a homogeneous mixture of moderator and absorber is presented. The method incorporates ortho-normal expansion without any approximation such as narrow or wide resonance.<BR>A new ortho-normal set of functions of which the weight function is of shifted Breit-Wigner type is introduced for this purpose.<BR>Sample calculations are carried out for a mixture of <SUP>59</SUP>Co and heavy water, which is a typical case far removed from the two approximations mentioned.<BR>Comparison of the results with numerically obtained exact solutions shows that the first four terms of the expanded series are sufficient to express the collision densities in this case.

• 一般社団法人 日本原子力学会の論文

著者

• MITANI Hiroshi

  Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken.

関連論文

• Distortion of Neutron Collision Density due to Resonance Scattering and Absorption

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