Experimental Test of the Theory of Neutron Diffusion in a Medium Containing Cavities

Abstract

Neutron fluxes have been measured in a solid graphite stack and in a stack with channels to test the theory of neutron diffusion. The results confirm the theoretical formulae relating the effective diffusion coefficients and diffusion lengths in a medium with empty channels to the channel parameters and to the corresponding diffusion coefficients and diffusion lengths for a continuous medium.