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In beta decay into a proton and an electron

In beta decay, a neutron is converted into a proton and an electron, and the electron is emitted.

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electron capture

In Electron capture The nucleus may capture an orbiting electron, causing a proton to convert into a neutron in a process called electron capture.

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via inverse beta decay

Inside a nucleus, a proton can transform into a neutron via inverse beta decay, if an energetically allowed quantum state is available for the neutron.

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into a proton, electron and (the antimatter counterpart of the neutrino antineutrino

When an atom undergoes one type of beta decay, a neutron inside its nucleus spontaneously transforms into a proton, electron and antineutrino (the antimatter counterpart of the neutrino); in a type of inverse beta decay, the neutron absorbs a neutrino and morphs into a proton and electron.