Ionization energies and term energies of the ground states 1s22s of lithium-like systems

doi:10.1088/1674-1056/23/1/013201

Abstract We extend the Hamiltonian method of the full-core plus correlation (FCPC) by minimizing the expectation value to calculate the non-relativistic energies and the wave functions of 1s²2s states for the lithium-like systems from Z=41 to 50. The mass-polarization and the relativistic corrections including the kinetic-energy correction, the Darwin term, the electron–electron contact term, and the orbit–orbit interaction are calculated perturbatively as first-order correction. The contribution from quantum electrodynamic (QED) is also explored by using the effective nuclear charge formula. The ionization potential and term energies of the ground states 1s²2s are derived and compared with other theoretical calculation results. It is shown that the FCPC methods are also effective for theoretical calculation of the ionic structure for high nuclear ion of lithium-like systems.

Keywords: lithium-like systems full core plus correlation ionization energy term energy

Received: 02 May 2013
Revised: 21 July 2013
Accepted manuscript online:

PACS:	32.10.Hq	(Ionization potentials, electron affinities)
	31.25.Nj
	31.30.Jv

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11074102 and 11204118).

Corresponding Authors: Li Jin-Ying
E-mail: lily_ying2003@163.com

Cite this article:

Li Jin-Ying (李金英), Wang Zhi-Wen (王治文) Ionization energies and term energies of the ground states 1s²2s of lithium-like systems 2014 Chin. Phys. B 23 013201

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Ionization energies and term energies of the ground states 1s22s of lithium-like systems

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Ionization energies and term energies of the ground states 1s²2s of lithium-like systems