Astrophysics (Index)About

pair production

(creation of a particle/antiparticle pair)

Pair production is the creation of a particle and its antiparticle from a neutral boson, such as creation of an electron and positron from a photon passing near a nucleus. Pair production occurs in some astronomical phenomena and is considered potentially significant in supernovae.

The interaction between boson and whatever must have sufficient energy to provide the (rest) mass of the two resulting particles, which is considerable energy, e.g., at least 1.022 MeV to produce the electron/positron pair, and much more for protons, neutrons, etc. This is in the gamma-ray range, and is the same amount of energy expected from annihilation of such a pair.


(particles,antimatter)
Further reading:
http://en.wikipedia.org/wiki/Pair_production

Referenced by pages:
Cherenkov detector
pair telescope
scintillator
superluminous supernova (SLSN)

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