Difference between revisions of "Positron"
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Positron
</dt>
A subatomic
particle which is identical to the electron in
atomic mass, theoretical rest mass, and energy, but opposite in sign. Compare
proton.
</dd>
The positron is short lived and can exist only when in motion. When it
combines with an electron, both particles are annihilated and two photons
result, equal in energy to the combined masses of the annihilated particles.
Production of positrons can occur only in pair
formation with the electron, the inverse of the annihilation process.
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References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
