FIRST MEASUREMENT OF RADIOISOTOPES BY COLLINEAR LASER SPECTROSCOPY ATAN ION-GUIDE SEPARATOR

The first successful application of an ion-guide separator (IGISOL) fo r collinear laser spectroscopy of radioisotopes has achieved an effici ency comparable with the best obtained with catcher-ionizer facilities . The ion beam energy spread was determined to be less than 6 eV, allo wing laser fluorescence resonance signals for the Ba-140,Ba-142,Ba-144 radioisotopes to be detected with high resolution and sensitivity. Ap plications of this technique to measuring nuclear properties of refrac tory elements and short lived isomers promises to be particularly adva ntageous.