Theoretical Research On The Transitional Energy And Oscillator Strength Of Lithium-like Atom Systems From Z=21 To 30

The history and the present conditions of the atomic physics are synoptically reviewed; the relationship of the atomic physics and its related knowledge is discussed; the importance of the highly ionized atoms (HIA) is expatiated. HIA systems are frequently met in the study of the experiment physics, astrophysics and nuclear physics, the study of them is of great benefit for the development of the related experiment physics and theoretic physics. The property of the Lithium-like atoms, especially, the property of the atoms who have three electrons with 1s2 core is important because of their particularity. The theory of the atomic constructure and the main theory and methods are talked, then, the principle and the achievement method Full-core plus correlation (FCPC) are reviewed. In this work ,FCPC is extended to calculated the transition energy and oscillator strengths of 1s22s,1s22p and 1s23p states of the system of HIA (Z=21-30). The non-relativistic energies and wave functions are calculated by using Rayleigh-Ritz(s variation method. Relativistic and mass-polarization effects on the energies are included as the first-order perturbation. The quantum-electrodynamics contributions to the transition energy are also evaluated by using effective nuclear charge. The fine structure is calculated by using the spin-orbit and the spin-other-orbit interaction operators. The results are in excellent agreement with experimental data available in the literature. In the same time, it is proved that FCPC is able to solve some problems of the systems of the HIA.