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The neutron-rich isotopes 54Ϫ57 Ti and 58Ϫ60 Cr are produced by fragmentation of a 64.5 MeV/nucleon 65 Cu 26ϩ beam in a 90 mg/cm 2 9 Be target. Following particle identification by energy loss and time of flight, the radioactive decay was observed by ␤ singles and ␤␥-coincidence measurements. The results obtained for 58Ϫ60 Cr are compared to previous results, whereas the decay of the 54Ϫ57 Ti isotopes is studied here. ␥-ray intensities and energies are estimated. The new experimental results are compared to quasi-random-phaseapproximation predictions. ͓S0556-2813͑96͒00212-9͔

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Abstract.A chemically selective laser ion source based on resonance ionization of atoms in a hot cavity has been applied for the study of short-lived silver isotopes at CERN/ ISOLDE. Silver atoms were ionized by two resonant excitations and final laser ionization into the continuum. Decay properties of the neutron-rich isotopes ~21-Z27Ag were studied with a neutron long-counter and a/3-detector.