Empirical Slater-Condon parameters for d⁹s²p electron configurations in Zn I, Cd I an dHg I: Reassignment of Cd I 4d ⁹5s²5p optically forbidden autoionising levels

Experimental oscillator strengths are used to obtain empirical configuration parameters in Zn 3d⁹4s²mp (m=4, 5, 6), Cd I 4d⁹5s²5p and Hg I 5d⁹6s²6p, by a method described in an earlier paper (Martin, 1984). All the known levels of Zn I 3d⁹4s²4p and Hg I 5d⁹6s²6p may be satisfactorily described in the single-configuration approximation. The deduced empirical configuration parameters of Cd I 4d⁹5s²5p lead to the reassignment of the experimental ejected-electron spectrum of Pejcev et al. (1972).