类In离子的能级结构参数的研究

Energy level structure parameters of In-like ions

在全相对论理论框架下,研究了类In等电子序(Ba VIII-Nd XII)低激发态组态5s^24f和5s`25p间的光谱性质.系统地研究了Breit相互作用和量子电动力学(QED)效应对能级的影响.离子Pr^(^(10+))附近出现相对论轨道4f-5p能级交叉,窄的能级间隔可以使得跃迁波长在现代激光范围,这可能设计成原子钟.计算得到Pr^(10+)基态和激发态磁偶极和电四极超精细结构常数.目前的计算结果可以为实验测量提供理论依据.

In the framework of full relativistic theory, In electronic sequence （Ba VIII - Nd XII） between the spectral properties of excited states 5s24f and 5s25p were studied. The effects of Breit interaction and quantum electrodynamics （QED） on the energy level were systematically studied. Our calculated energy levels were found to be in excellent agreement with experimental and other theoretical values. The new data of energy levels parameters were predicted. The level crossing happened between the configurations 5s24f and 5s25p with increasing nuclear charge. The transition frequencies are within the range of usual lasers because of the level crossing. In-like ions may be developed into atomic clock. For Pr10＋, the computation of magnetic dipole and electric quadrupole hyperfine interaction constants （A, B） were reported. Accurate calculation results can provide theoretical basis for experimental measurement.