The results of an investigation and application of laser ion source intended for high-efficiency chemical selective ion production at the mass-separator IRIS are presented. The ion source is based on a stepwise resonance ionization of atoms in a hot capillary by laser radiation passing through it. A high degree of efficiency of ionization (up to 30%) is achieved. The laser ion source has been employed for on-line experiments with nuclides far from stability, as well as measurements of optical isotope shifts and hyperfine structure as well as a study of the beta strength functions. A new design of the ion source, the dependence of the surface ionization background on the capillary material and time properties of photoion bunches at the mass-separator are discussed.
Nuclear Instruments and Methods in Physics Research B
- Pub Date:
- April 1996
- LASER ION SOURCE;
- RESONANCE IONIZATION SPECTROSCOPY