Escape of fission products from slurry particles

Abstract

The escape of fission products from fissile particles by recoil and by diffusion are discussed in general terms and equations governing these processes are derived. Experimental determinations of the mean free paths of the fission fragments and of the diffusion coefficients are reviewed. This data is then applied to a slurry of the composition under consideration viz. 1 or 2 atomic percent uranium, as metal or oxide in sodium. Tentative conclusions are drawn as to the optimum size for the slurry particles.