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5. Neutrinos
5.1 Neutrino properties
The history of neutrinos began in 1914, when Chadwick measured the energy spectrum of electrons resulting from the β decay of nuclei. In this reaction, a nucleus (A, Z) transforms into a nucleus (A, Z +1), with the emission of an electron, which is detected. For this type of two-body decay in the final state, the energy of the electron should have a well-defined value to satisfy the law of conservation of energy. However, the spectrum...
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