类锂离子(Z=11～20)1s^22s-1s^23p的跃迁能和振子强度

Calculations of 1s^22s-1s^23p transition energies and oscillator strengths for lithium-like systems from Z=10 to 20

用全实加关联方法计算类锂离子 (Z =11～ 2 0 )偶极跃迁 1s2 2s 2 S - 1s2 3p 2 P , 的跃迁能。非相对论能量用Rayleigh -Ritz变分法确定 ,相对论修正和质量极化效应用微扰论计算 ,还估算了来自量子电动力学效应的修正。得到的计算结果与现有的实验数据符合得很好 ,我们关于氯的类锂离子 (Z =17) 1s2 3p态的精细结构劈裂的计算结果揭示 ,相应的实验数据明显偏离等电子序列的物理规律。还算了 1s2 2s -1s2

The transition energies (1s 22s? 2S 1/2 -1s 23p? 2P 1/2,3/2 ) of lithium like systems with nuclear charge from Z =11 to 20 are calculated by using a full core plus correlation (FCPC) method. The non relativistic energies and wave functions are calculated by Rayleigh Ritz's variation method. Relativistic and mass polarization effects on the energies are included as the first order perturbation corrections. The quantum electrodynamics contributions to the transition energy are also evaluated by using effective nuclear charge. The results are in excellent agreement with experimental data except for the case of Z =17. In this case the experimental datum for fine structure splitting of 1s 23p state available in the literature deviates significantly from a well behaved is electronic trend. The dipole oscillator strengths (1s 22s-1s 23p) of these ions are calculated by using our FCPC wave functions.