Hyperfine Structure of Ra+and Nuclear Magnetic Moments of Radium Isotopes

The energy levels, fine-and hyperfine-structure intervals in the Ra+ ion have been calculated using the relativistic Hartree–Fock method with the core polarization and correlation corrections taken into account. The accuracy of calculation is ~ 1%. The calculation enables us to improve the accuracy of determination of the radium isotopes (A = 211-229) magnetic moments from the data on hyperfine structure (Ref. [1]).