The Distribution of Thermal Neutrons in Space and Energy in Reactor Lattices. Part II: Comparison of Theory and Experiment

The results obtained in Part I of this paper are compared with experimental intracell foil activation measurements. The computed neutron density distributions in D₂O and graphite moderated lattices are in good agreement with the measured distributions. A systematic discrepancy between computed and measured neutron density distributions in water lattices is observed. This discrepancy is probably caused by the inadequacy of the gas model to describe slow neutron scattering from water.