NEUTRON MODERATOR FOR THE SHIELDING OF NEUTRONS AND CONTAINERS INTENDED FOR THE STORAGE OF BURNT NUCLEAR FUELS

摘要

According to the invention, the moderator material is coated or encased with a material as diffusion barrier for hydrogen. In a manner known per se in this regard, the moderator material is a metal hydride which is used in the form of granules, small spheres, rods or plates, which are coated or enclosed with the diffusion barrier. For the metal hydride, use is made in particular of a stable hydride of the titanium group or of the alkali metals or alkaline earth metals. Oxides or enamels are very well suited as diffusion barriers. IMAGE