As an important step towards an atomic parity violation experiment in one
single trapped Ra+ ion, laser spectroscopy experiments were performed with
on-line produced short-lived 212,213,214Ra+ ions. The isotope shift of
the 6\,^2D3/2\,-\,7\,^2P1/2 and
6\,^2D3/2\,-\,7\,^2P3/2 transitions and the hyperfine structure
constant of the 7\,^2S1/2 and 6\,^2D3/2 states in 213Ra+
were measured. These values provide a benchmark for the required atomic theory.
A lower limit of 232(4) ms for the lifetime of the metastable
6\,^2D5/2 state was measured by optical shelving.Comment: 4.2 pages, 6 figures, 2 tables