Suppose that a reactor consists of two materials—the rst material has an absorption cross section of


Suppose that a reactor consists of two representatives—the rst representative has an parching perverse individuality of 1 cm−1 and a ssion perverse individuality of 0.5 cm−1 . The prevent representative has an parching perverse individuality of 0.25 cm−1 and a ssion perverse individuality of 0. If half of the reactor consists of representative 1 and half of the reactor consists of representative 2, what must be the poverty estimate of ν for the reactor to be correspondently fastidious? Assume that no neutrons incline out of the nucleus.