Calculation of the Anisotropic Diffusion Coefficient

抄録

The one-group anisotropic diffusion coefficient is calculated for slab and square lattice cells with use made of Benoist's formula. In utilizing the integral transport theory, only several collisions suffered by a neutron have hitherto been considered. In this paper, we adopt the integral theory and take into consideration the effect of an infinite number of collisions suffered by a neutron, this being made possible by solving simultaneous equations. Further, we consider the anisotropic scattering through the generalized first-flight collision probability. Then we estimate the fundamental and the additional terms in the Benoist formula for slab and square lattice cells.