Spherical harmonics moments of the neutron angular flux are calculated for spherically symmetric systems. Neutron angular fluxes are determined by employing the S_N method. Spherical harmonics moments of S_N method calculations are compared to the singular eigen function expansion computations. Total flux and current determined by both of these meth- Ods show a good agreement, so the higher order moments are also compared. This study was Undertaken to investigate accuracy in calculation of the spherical harmonics moments by the purely numerical S_N method.
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