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Neutron deficient isotopes of 89Tc and 89mTc have been produced through the 6~ p2n)89Tc at 95 MeV and the 58Ni(35Cl, 2p2n)S9Tc reaction at 135 MeV. A rotating catcher foil system was used to collect the activities and transfer them to a measuring position for/~-V spectroscopy. The half-lives of 89Tc and 89mTc were measured to be 12.8 +__0.9 s and 12.9-t-0.8 s, respectively. The total decay energy, Qzc, for 89Tc was determined to be 7.51___0.21 MeV.

The neutron deficient isotope 79y has been firstly identified and the decay properties were studied from ]/-decay measurements in the reaction of 54Fe(28Si, p2n) at 92MeV. Three 7 rays of 152.5, 177.4, and 1106 keV were observed concerning the fl decay. The half life and QEC value were determined to be 14.9+0.6 s and 7.12_+0.45 MeV, respectively. The decay scheme including spin-parity is discussed, and 5/2 + assignment for the ground state is proposed.

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