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Positron emission

Nuclear processes
Radioactive decay processes

Positron emission is a type of beta decay, referred to "beta plus"(β+ ). In beta plus decay, a proton is converted to a neutron via the weak nuclear force and a beta minus particle (a positron) and a neutrino are emitted. Example isotopes which emit positrons are C-11, N-13, O-15 and F-18. These isotopes are used in Positron emission tomography.

See also Beta decay