The electron-positron pair production as well as the β+-emission require a minimum energy of 1,022MeV. Therefore it can be stated that the underlying cause of the β+-emission is a electron-positron pair production within the atomic nucleus. The positron is emitted and the electron is captured. This leads to a consistent image of the β-decays.

(The figure below demonstrate this on the example of the nuclei with A=71.)

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