karan verma
1 Answer
Jack Large
A self-sustaining nuclear reaction is one in which each fission of an atomic nucleus causes neutrons and energy to be emitted, each collision of neutrons with other nuclei causing a further fission as in a nuclear powered electric generator.
Since the continued chain reaction of a nuclear fission Reactor depends upon at least one neutron from each fission being absorbed by another fissionable nucleus, the reaction can be controlled by using control rods of material which absorbs neutrons. Cadmium and boron are strong neutron absorbers and are the most common materials used in control rods.
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