Nuclear Science and Engineering / Volume 2 / Number 4 / July 1957 / Pages 461-468
Technical Paper / dx.doi.org/10.13182/NSE57-A25410
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The distribution of enrichment which makes a natural uranium lattice with k∞ < 1 critical with the smallest amount of added U235 is calculated on the basis of a simple model. The results are generalized to the minimization of total enrichment cost when this cost is a nonlinear function of the added fissionable material.