DOUBLE-BATCHING CELL LOADINGS IN STORAGE ARRAYS OF FISSILE MATERIALS

摘要

Monte Carlo calculations of reflected cubic arrays of U(93-2) spherical units are reported in which the influence of unit reactivity on the array neutron multiplication factor is studied. Perturbations to an array by increasing the mass of one or more units are examined as a function of the mass of the unit, the cell dimension, the number of units in the array, and the array neutron multiplication factor. Conditions are stated which define when double batching one or more units in a subcritical reflected array will not lead to criticality.