Abstract
The decay of Cu 68 was studied after bombarding Zn and Ga with 14 MeV neutrons, using standard scintillation counter techniques. The beta and gamma measurements showed the presence of four gamma rays of energies 810±8 keV(18), 1080±3 keV(100), 1240±10 keV(3) and 1880±10 keV (5) and three beta groups of maximum energies 3.5±0.06 MeV (75%), 2.7±0.08 MeV (22%) and 2.25±0.08 MeV(3%) decaying with a half life of 30±1 sec.. Coincidence and sum spectrum studies showed that the 1080 keV gamma ray was in cascade with the 800 keV and 1240 keV gamma rays, and that the 1080 keV gamma rays was in coincidence with 3.5 MeV, 2.7 MeV and 2.25 MeV beta particles. A decay scheme is proposed, and a Cu 68Zn 68 mass difference of 4.58 MeV is obtained.
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