Eur. Phys. J. D (2016) 70: 239
https://doi.org/10.1140/epjd/e2016-70297-y

Regular Article

Study of the 4p², 5p² and 5s5f excited configurations of the Zn and Cd isoelectronic sequences, using relativistic and non-relativistic semiempirical approaches

¹ Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional del Centro and CIFICEN (CONICET-UNCPBA), Pinto 399, 7000 Tandil, Argentina
² Centro de Investigaciones Ópticas, CIOp, CC 3, 1897, Gonnet, La Plata, Argentina

^a e-mail: hdirocco@exa.unicen.edu.ar

Received: 29 April 2016
Received in final form: 5 September 2016
Published online: 10 November 2016

Abstract

The consistency of the energy levels published for configurations 4p², 5p² and 5s5f belonging to Zn and Cd isoelectronic sequences is studied. Different semiempirical approaches considering the linearity of the Slater integrals for large Z_c, the smoothness of the s_F screening parameters, the energy values in terms of Z (or Z_c), and the differences of the E_calc − E_exp values are used, where E_calc values are energies calculated with a Hartree-Hock method with relativistic corrections and superposition of configurations (HFR-SOC), and E_exp are the experimental values. For the np² configurations both LS and relativistic jj expressions are considered. Configuration 5s5f is also analyzed taking into account the Landé’s interval rule.