Étude de la désintégration 95Zr → 95Nb

Abstract The decay 95 Zr → 95 Nb was studied by means of an iron-free double-focussing β-spectrometer and Ge(Li) detectors. The photon relative intensity of the 758, 724 and 236 keV transitions was measured. The 236 keV isometric transition was studied with a Zr-free 95m Nb source, and its energy, half-life, α K and α K / α L+M+… were accurately measured. Internal conversion results agree completely with theoretical calculations for an M4 assignment. The number of 724 keV photons per 95 Zr decay and β-branching ratios were deduced.