Ni^(25+)离子1s^2np态的精细结构  

Fine structure of 1s^2np states for Ni^(25+)ion

作　　者：王治文[1,2] 国阳[1] 

机构地区：[1]辽宁师范大学物理与电子技术学院,大连116029 [2]吉林大学原子与分子物理研究所,长春130012

出　　处：《原子与分子物理学报》2009年第4期597-600,共4页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金(10774063)

摘　　要：用全实加关联方法计算了Ni^(25+)离子1s^2np(n≤9)态的能量和精细结构.1s^2np态的非相对论计算结果为—851.91237219 a.u,与Yan.等人用Hylleraas-型变分法和1/Z展开方法得到的—851.91246266(74)a.u.之间的相对偏差仅约0.1 ppm.在计算1s^2np(n≤9)态的自旋-轨道相互作用以及自旋-其他轨道相互作用的期待值的基础上,通过引入价电子的有效核电荷,还估算了对精细结构劈裂的QED修正和高阶相对论修正.结果表明,这两种效应的贡献大约分别占总劈裂的0.2%和2%.The energy and fine structure of 1s^2np （n≤9） states ior Ni^25＋ ion are calculated by using the full-core plus correlation method. Non-relativistic energy of 1s^22p state, -851. 91237219 a. u, obtained in this paper closely agree with the result, -851. 91246266（74）a. u. , given by Yan at al using the Hylleraas-type variational method and 1/Z expansion method. The relative discrepancy between them is only about 0. 1 ppm. The expectation values of the spin-orbit and spin-other-orbit interactions in 1s^2np （n≤ 9） states for Ni^25＋ ion are computed. Based on this, the higher-order relativistic contribution and QED correction to the fine-structure splitting are estimated under a hydrogenic approximation. The results indicate that the contributions to the splitting from these two effects are about 0.2% and 2% of the total splittings, respectively.

关 键 词：Ni^25离子 精细结构 相对论修正 

分 类 号：O562.1[理学—原子与分子物理]