The half-life of 103mRh

Abstract The half-life of 103 m Rh was measured using a liquid scintillation spectrometer, a 2 π -proportional flow counter, and a thin NaI(Tl) crystal. The mean value of the three results is (56·116 ± 0·009) min. The sources were prepared by a nuclide generator and had a radiochemical purity greater than 99·99%.