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Radioactive decay processes
Nucleosynthesis |
Positron emission is a type of beta decay, referred to as "beta plus" (β+). In beta plus decay, a proton is converted to a neutron via the weak nuclear force and a beta plus particle (a positron) and a neutrino are emitted. Isotopes which emit positrons include Carbon-11 , Nitrogen-13, Oxygen-15 and Fluorine-18 ; for example:
These isotopes are used in positron emission tomography.