文献类型：期刊文献

英文题名：The excitation energies and term energies of the excited states 1s 2ns (n=3,4,5) and Is2nf (n=4,5) of lithium-like systems of Z=11-20

作者：Ge, Zi-Ming[1]; Wang, Zhi-Wen[2,3]; Zhou, Ya-Jun[2]; He, Li-Ming[1]; Liu, Guo-Guang[1]

机构：[1] Department of Physics, East China University of Science and Technology, Shanghai 200237, China; [2] Institute of Atomic and Molecular Physics, Jilin University, Changchun 130023, China; [3] Department of Physics, Liaoning Normal University, Dalian 110628, China

年份：2003

卷号：12

期号：5

起止页码：488

外文期刊名：Chinese Physics

收录：EI(收录号：2005339297913)

语种：英文

外文关键词：Correlation methods - Electric charge - Electric excitation - Electrodynamics - Kinetic energy - Perturbation techniques - Quantum electronics

摘要：In this paper, the full-core plus correlation (FCPC) and the Ritz method is extended to calculate the non-relativistic energies of 1s2ns (n=3,4,5) and 1s2nf (n=4,5) states and the wavefunctions of the lithium-like systems from Z=11-20. The mass-polarization and the relativistic correction including the kinetic-energy correction, the Darwin term, the electron-electron contact term, and the orbit-orbit interaction are evaluated perturbatively as the first-order correction. The contribution from quantum electrodynamic is also included by using the effective nuclear charge formula. The excited energies, the term-energy and fine structure, are given and compared with the other theoretical calculation and experimental results. It is shown that the correlative wave in the FCPC method embodies well the strong correlation between the 1s2 core and the valence electron. ? 2003 Chin. Phys. Soc. and IOP Publishing Ltd.