DOPPLER-FREE LASERSPECTROSCOPIC INVESTIGATIONS OF HYPERFINE-STRUCTURE IN THE ATOMIC COBALT SPECTRUM

Performing Doppler-free laserspectroscopic investigations in the red wavelength region (640-670 nm) we were able to determine 10 A-factors and 9 B-factors of atomic cobalt levels. Now precise values of 18 A-factors and 16 B-factors of levels belonging to the configurations (3 d+4 s)9 are known. Fitting of the one-electron radial parameters to introduce agreement between experimental and theoretical hfs constants allows the prediction of hfs constants of not yet investigated fine structure levels. Values of the electric quadrupole moment of the Co59 nucleus are determined in two electron configurations. The resulting mean value of the spectroscopic quadrupole moment is Q=0.35(3) barn. © 1990 Springer-Verlag.