Under the right circumstances, a photon of high enough energy can give rise to an electron-positron pair. What minimum energy photon is required?

University Physics Volume 3
17th Edition
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:William Moebs, Jeff Sanny
Chapter6: Photons And Matter Waves
Section: Chapter Questions
Problem 162AP: Assume that a hydrogen atom exists in the n=2 excited state for 108 s before decaying to the ground...
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Under the right circumstances, a photon of high enough energy can give rise to an electron-positron pair. What minimum energy photon is required?

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