Abstract
Nuclear charge radii of have been determined by high-precision laser spectroscopy. On-line measurements were performed with collinear laser spectroscopy in the transition on a beam of ions. Collinear and anticollinear laser beams were used simultaneously, and the absolute frequency determination using a frequency comb yielded an accuracy in the isotope-shift measurements of about 1 MHz. Combining this with accurate calculations of the mass-dependent isotope shifts yields nuclear charge radii. The charge radius decreases from to and then increases for the halo nucleus . When comparing our results with predictions of ab initio nuclear-structure calculations we find good agreement. Additionally, the nuclear magnetic moment of was determined to be and that of was confirmed with an accuracy similar to previous -NMR measurements.
- Received 6 September 2008
DOI:https://doi.org/10.1103/PhysRevLett.102.062503
©2009 American Physical Society