An on-line laser ion source has been developed and coupled to an on-line isotope separator for the production of isotopically and isobarically pure beams of radioactive ions. It is based on element-selective resonant laser ionization of nuclear reaction products thermalized and neutralized in a high-pressure noble gas after their recoil out of the target. Pure beams of Ni-54,Ni-55 and Co-54, produced in a light-ion-induced fusion-evaporation reaction, and of Rh-113, produced in a proton-induced fission of U-238, were obtained. A preliminary efficiency of the ion source of similar to 6 for fusion reactions and of similar to 0.2 for fission reactions has been obtained. A selectivity of the ion source of 300 for fusion and 50 for fission reactions limited by the evacuation of non-neutralized reaction products has been achieved. (C) 1996 American Institute of Physics. References: 19
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