What is the minimum energy the ?-ray

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Threshold for pair production by a photon A high energy photon (γ-ray) collides with an electron and produces an electron-positron pair according to the reaction

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What is the minimum energy the γ-ray must have for the reaction to occur?

Reference no: EM131098807

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What is the minimum energy the ?-ray : What is the minimum energy the γ-ray must have for the reaction to occur?
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