What are control rods in a nuclear reactor?

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(B) In a nuclear reactor,control rods are made of materials that have a high neutron absorption cross-section,such as $Cadmium$ or $Boron$. Their prim

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Rods used to absorb excess neutrons to control the fission chain reaction.

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(B) In a nuclear reactor,control rods are made of materials that have a high neutron absorption cross-section,such as $Cadmium$ or $Boron$. Their primary function is to regulate the rate of the nuclear fission chain reaction by absorbing excess neutrons. By inserting or withdrawing these rods into the reactor core,the operator can control the number of neutrons available for fission,thereby maintaining a steady power output or shutting down the reactor safely.

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