Sternheimer free determination of theCo59nuclear quadrupole moment from hyperfine-structure measurements

Taking into account results of earlier hyperfine-structure (hfs) measurements, the hfs of altogether 20 fine-structure (fs) levels has been analyzed by the simultaneous parametrization of the one- and two-body interactions in the atomic hfs for the model space (3d+4s${)}^{\mathit{N}+2\mathrm{}}$ (N=7). The values of the one- and two-body hfs parameters have been determined. The evaluation of the nuclear quadrupole moment of ${}_{}{}^{59}{}_{}{}^{}\mathrm{Co}$ including Sternheimer corrections up to second order yielded the value of 0.41(1) b. Moreover, the values of the magnetic-dipole constants A and the electric-quadrupole constants B for all levels of the model space (3d+4s${)}^9$ have been predicted.