In regular enriched uranium lattices with a H2O moderator the multiplication factor increases as the moderation increases. This behaviour of the multiplication factor continues until the neutron spectrum is completely thermal. However lattices based on a fuel composite of 238UO2 + PuO2 show a different behaviour. In this paper the apparent "anomality" in the behaviour of UPu fuel systems is explained.
ASJC Scopus subject areas
- Nuclear Energy and Engineering