Breeding ratio

The ratio of fissile materialAny substance which can be fissioned by neutrons, during whi... obtained to spent fissile materialAny substance which can be fissioned by neutrons, during whi... after the use of a fuelSee 'nuclear fuel'. mixture of fissile and fertile materialNon-fissionable material from which fissionable material is ... in a reactorSystem used to initiate, maintain and control a fission chai....