Isomeric transition is a form of radioactive
decay where a gamma photon
is emitted by a nucleus
in an excited metastable state
. The photon is emitted when the energy
of the excited nucleus drops to the lower, ground state
Isomeric transition does not alter the components of the parent
nucleus, it only lowers the energy level.
Isomeric transition decay is denoted by the abbreviation: IT.
Also Known As: internal transition