When an electron is formed from a gamma-ray collision, a positron is also made.

Question

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According to the law of conservation of energy and mass, when a gamma-ray photon collides with matter, it can produce an electron-positron pair. Therefore, when an electron is formed, a positron is also made. This is a process known as pair production, where a gamma-ray photon with energy greater than 1.02 MeV can spontaneously convert into an electron and a positron.

When an Electron Is Formed from a Gamma-Ray Collision, a Positron