pair production definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a process whereby a gamma ray having an energy greater than 1.02 MeV is converted into an electron and positron pair in the strong electric field of a nucleus
pair production definition by American Heritage Dictionary
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The simultaneous creation of a subatomic particle and its antiparticle from another form of energy, especially the production of a positron and an electron from a gamma ray photon in a strong electric field, such as that surrounding a nucleus.
pair production - Science Definition
The simultaneous creation of a subatomic particle and its antiparticle from some other particle or a field fluctuation. A high-energy gamma ray photon, for example, can spontaneously create an electron-positron pair in a strong electric field. Pair production is essential to theories of particle physics; pair production from gamma rays is used to detect such rays in pair production telescopes, since electrons and positrons are easily detected.