1. In Current Science, “beta decay” or the “weak” interaction, is the term used in reference to three atomic events:
- The emission of an electron by the free neutron or a radioactive nucleus. A proton is simultaneously created in the nucleus.
- The emission of a positron by a nucleus. A neutron is simultaneously created in the nucleus. The positron is strongly attracted to a nearby electron, annihilating both when they meet.
- The capture of an electron by a nucleus. A neutron is simultaneously created in the nucleus.
2. In Neu Theory; See spontaneous neutron transformation and little bangs hypothesis.
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