Nuclear Science and Engineering / Volume 53 / Number 4 / April 1974 / Pages 420-435
Technical Paper / dx.doi.org/10.13182/NSE74-A23373
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The importance of the structure of the detailed neutron spectrum, and in particular, its spatial dependence, in typical core-blanket and core-reflector fast-reactor configurations is investigated. The validity of current weighting spectra used in few-group (∼25) cross-section sets is established as are the limits of variation of coarse-group cross sections.