Laser spectroscopy on lithium-like ions at the HESR

Possibilities of studying D1 and D2 transitions in lithium-like ions by laser spectroscopy at the HESR at FAIR are presently being considered. First experiments could already be performed using conventional lasers to excite these transitions in medium-Z lithium-like ions. Hyperfine structure and isotope shift could be studied and nuclear moments and charge radii being extracted. However, challenges connected with these experiments will have to be resolved first. (paper)