pair creation


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Noun1.pair creation - the transformation of a gamma-ray photon into an electron and a positron when the photon passes close to an atomic nucleus
natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
References in periodicals archive ?
Then, given the experimental fact of electron-positron pair creation, it is reasonable to conclude that the incident free electron creates such pairs when it "collides" with the stressed portion of the vacuum (z > 0), the positrons (Dirac "holes") proceeding to the right into the vacuum after the collision [8, fig.
However, the simple picture presented in the previous paragraphs and in Section 2 concerning pair creation modifies that view significantly.