Nuclear reaction in which a proton enters the nucleus and a neutron is emitted.

See Picture Archiving and Communication System.

The process of pair production is the creation of a particle and its antiparticle. If a photon with a minimum energy of the rest mass of an electron and a positron hits a nucleus an electron and a positron is emitted. The surplus energy appears as the kinetic energy of the two created particles. Conservation of energy and momentum makes pair production possible or not.

The nuclide which produces by radioactive decay or nuclear reaction (e.g. in a generator) the daughter nuclide. The daughter nuclide becomes, if not stable, the unstable parent in the next decay.

See also Decay, Decay Chain and Generator.

(ppm) Part per million is a unit of proportion equal to 10^-6.