Positron-emitting Isotopes
Isotopes which undergo this decay and thereby emit positrons include carbon-11, potassium-40, nitrogen-13, oxygen-15, fluorine-18, and iodine-121. As an example, the following equation describes the beta plus decay of carbon-11 to boron-11, emitting a positron and a neutrino:
-
11
6C→ 11
5B+ e+ + ν
e+ 0.96 MeV
Read more about this topic: Positron Emission