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Wikipedia definition
1. Proton emissionProton emission (also known as proton radioactivity) is a type of radioactive decay in which a proton is ejected from a nucleus. Proton emission can occur from high-lying excited states in a nucleus following a beta decay, in which case the process is known as beta-delayed proton emission, or can occur from the ground state (or a low-lying isomer) of very proton-rich nuclei, in which case the process is very similar to alpha decay.
Read “Proton emission” on English Wikipedia
Read “陽子放出” on Japanese Wikipedia
Read “Proton emission” on DBpedia

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