Production of new neutron-rich isotopes near the N=60 isotones Ge92 and As<…

A search for new neutron-rich isotopes near the N=60 isotones ^92Ge and ^93As has been performed using a 345 MeV/nucleon ^238U beam at the RIKEN Nishina Center RI Beam Factory. Fission fragments produced were analyzed and identified in flight using the large-acceptance two-stage separator BigRIPS. We have observed a total of 15 new neutron-rich isotopes: ^84Cu, ^86, 87Zn, ^88, 89Ga, ^91, 92Ge, ^93, 94, 95As, ^96, 97Se, ^99, 100Br, and ^103Kr.