Disintegration rate, gamma-ray emission probabilities and metastable half-life measurements of super(67)Ga

The procedure for determining the super(67)Ga disintegration rate by a primary method is described. The proposed triple 4 pi beta - gamma coincidence system consists of a thin window gas-flow 4 pi proportional counter (PC) coupled to a NaI(Tl) scintillator and a HPGe crystal. Independent pulse height and occurrence time information is provided for the three detector outputs by means of a Software Coincidence System. Separate spectrometry measurements with a n-type reversed electrode coaxial Ge detector (REGe) were performed for obtaining gamma-ray emission probabilities per decay. Accurate values of disintegration rate, gamma-ray emission probabilities and the metastable half-life were achieved.