A. Jokinen et al., SELECTIVE LASER IONIZATION OF RADIOACTIVE NI-ISOTOPES, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 126(1-4), 1997, pp. 95-99
A chemically selective laser ion source based on resonance ionization
of atoms in a hot cavity has been applied in the study of Ni-isotopes
at the CERN-ISOLDE on-line isotope separator, Laser ionization enhance
d the yields of long-lived Ni-isotopes almost four orders of magnitude
when compared to the yields obtained with the surface ionization mode
of the source. As a result, high yields of long-lived Ni-isotopes wer
e obtained. Separation efficiencies of 0.3 and 0.8% were obtained for
Ni produced in uranium-carbide, produced from uranium-di-pthalocyanine
, and Ta-foil targets, respectively, Ni was found to be released very
slowly from the present target and ion source combination.