Nuclear Physics
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Electron Capture

When a nucleus captures one of its own orbiting electrons (usually from the lowest energy state, or K-Shell), the electron and one of the protons form a neutron, and a new element is formed

Picture
Some examples of electron capture. The electron disappears and a new neutron is created from a proton combining with the electron. A neutrino is given off, along with X-rays which are the result of photons being given off as outer shell electrons drop down to lower energy levels to fill the gap and give off energy.

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