A development of the techniques for solving the quasirelativistic Hartree-Fock equations for quasirelativistic atomic calculations published earlier [Phys. Rev. A 74, 052501 (2006)] is presented. Trial calculations using these techniques revealed that the one-electron characteristics and spin-orbit splitting are less precise in the case of $p$ electrons. To overcome this problem, a different method of averaging the spin-orbit interaction within the quasirelativistic Hartree-Fock equation is proposed for $p$ electrons. The specific account of the contact interaction in the case of $p$ electrons is discussed. The technique for calculating the spin-orbit interaction constant while using the quasirelativistic radial orbitals is presented. Since the pecularities appear on the level of one-electron interactions, only hydrogenlike ions are investigated. Data revealing how the methods under discussion influence the results obtained are presented.

• Received 18 May 2007

DOI:https://doi.org/10.1103/PhysRevA.76.012507