STERNHEIMER FREE DETERMINATION OF THE CO-59 NUCLEAR-QUADRUPOLE MOMENTFROM HYPERFINE-STRUCTURE MEASUREMENTS

Taking into account results of earlier hyperfine-structure (hfs) measu rements, 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)N+2 (N = 7 ). The values of the one- and two-body hfs parameters have been determ ined. The evaluation of the nuclear quadrupole moment of Co-59 includi ng Sternheimer corrections up to second order yielded the value of 0.4 1(1) b. Moreover, the values of the magnetic-dipole constants A and th e electric-quadrupole constants B for all levels of the model space (3 d + 4s)9 have been predicted.