Ratio of neutronUncharged elementary particle with a mass of 1.67492716 ·10... number in a neutronUncharged elementary particle with a mass of 1.67492716 ·10... generation to the neutronUncharged elementary particle with a mass of 1.67492716 ·10... number in the generation immediately preceding that generation. CriticalityThe condition of a nuclear reactor where a reaction initiate... of a reactorSystem used to initiate, maintain and control a fission chai... occurs when this ratio is equal.
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