Answer to Question #280598 in Atomic and Nuclear Physics for BIGIRMANA Elie

Question

The cross section of 113Cd for capturing thermal neutrons is 2 × 104 b (b= barns). The mean atomic mass of natural Cadmium is 112u and its density is 8.64 × 103 kgm−3 . Considering that 113Cd constitute 12% of natural Cadmium and if the fraction of incident (beam) of thermal neutrons that is absorbed is 0.01. Find: (a) The thickness of Cadmium needed for neutrons absorption

(b) The mean free path of thermal neutrons.

Answer 1

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