Control rods are devices used in nuclear reactors to manage the rate of fission reactions by absorbing neutrons, thereby regulating the nuclear chain reaction. By inserting or withdrawing control rods from the reactor core, operators can achieve criticality, maintain a steady state of power, or shut down the reactor completely. These rods play a crucial role in ensuring safety and efficiency in the fission process, as well as in the overall operation of various types of nuclear reactors.
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