NUCLEAR SPECTROSCOPY USING LASERS AT OAK-RIDGE-NATIONAL-LABORATORY - EXPERIMENTS WITH STABLE (PAST) AND RADIOACTIVE (FUTURE) TANDEM BEAMS

Fast beam collinear laser spectroscopy has yielded information on nucl ear structure on the long chain of neutron deficient T1 isotopes (186 less than or equal to A less than or equal to 205) using heavy ion fus ion evaporation reactions to produce Tl-ion beams which for the most n eutron deficient isotope were only about 10(4)/s. The new radioactive heavy ion beam facility projected to be completed in 1995 requires eve n higher sensitivities at the few 10 nuclei/s level. Two examples to r ealize such ultra-sensitive measurements employing laser techniques ar e described. They are: field-ionization spectroscopy in a fast beam an d stored ion spectroscopy in a novel linear combined trap.