While most of germanium's radioisotopes decay by beta decay, and decay by [ [ Positron emission | ] ] delayed proton emission . through isotopes also exhibit minor [ [ Beta decay | ] ] delayed neutron emission decay paths.
2.
Those excited states that lie below the separation energy for protons ( Sp ) decay by ? emission towards the groundstate of daughter B . For the higher excited states a competitive decay channel of proton emission to the granddaughter C exists, called ?-delayed proton emission.