MODERATOR FOR NUCLEAR REACTOR

摘要

There is disclosed a moderator for a nuclear reactor, comprising a composition of heavy water and at least one of the following components: a solid particulate material a gaseous agent wherein such other component(s), e.g. graphite, zirconium oxide or air, must exhibit a low neutron absorbance. This partial substitution of the heavy water volume by the other component(s) results in a reduced cost of the moderator without a significant decrease in its moderating properties, nor a significant increase in its overall absorbance.