So I've been looking into particle-antiparticle pair production from a gamma ray and don't understand one thing. Sells (Allyn and Bacon, 1973). Pair Production If a photon enters matter with an energy in excess of 1.022 MeV, it may interact by a process called pair production. Let's say I have a 1,1 MeV photon and it hits a nucleus - electron-positron pair with some momentum will be created and the nucleus will … Pair production is the process that results in the conversion of a photon into an electron–positron pair. The photon must have enough energy to … The photon, passing near the nucleus of an atom, is subjected to strong field effects from the nucleus and may disappear as a photon and reappear as a positive and negative electron pair. by R.T. Weidner and R.L. Pair Production and Annihilation . In addition to the photoelectric effect (photon absorption) and Compton scattering (photon scattering), there is a third process by which photons can lose energy in their interaction with matter. Photon Pair Production. Sometimes, a photon turns into a particle and its antiparticle, for example, an electron and a positron. Displaying all worksheets related to - Photon Pair Production. The photoelectric and Compton effects represent two mechanisms of photon absorption, the process in which a photon gives up some or all of its energy to a material … Pair Production []. It could not turn into just an electron, since this would leave the lepton number unbalanced. Pair production refers to the creation of an elementary particle and its antiparticle, usually from a photon (or another neutral boson).This is allowed, provided there is enough energy available to create the pair – at least the total rest mass energy of the two particles – and that the situation allows both energy and momentum to be conserved (though not necessarily on shell). In this process, termed pair production, a photon can simply vanish and in its place a matter-antimatter pair of particles can appear. Since photon has no rest mass, we can say that this process converts energy into mass according to Einstein’s mass energy relation E=mc 2.Earlier in the chapter we discussed the process of electron–positron annihilation, in which mass converts into energy. No headers. pair-p&a.htm(Ó R. Egerton) Figure references in this section are to the alternate second edition of Elementary Modern Physics .