The isomers Tc, Ru, Tb and Bi

The decay of the isomers in ¹⁰¹Tc, ¹⁰³Ru, ¹⁵⁸Tb and ²⁰⁸Bi produced by 28 MeV bremsstrahlung has been re-investigated with a Ge(Li) counter. The previously deduced decay schemes of ¹⁵⁸Tb and ²⁰⁸Bi have been confirmed. The previously reported isomer in ¹⁵⁹Gd has not been found by irradiation of a ¹⁶⁰Gd sample. It is argued that this isomer is identical with the ¹⁵⁸Tb isomer.