Correlation effects on the fine-structure splitting within the 3d<sup>9</sup>ground configuration in highly-charged Co-like ions

Correlation effects on the fine-structure splitting within the 3d⁹ground configuration in highly-charged Co-like ions

Guo Xue-Ling^{1, 2}, Huang Min^{1, 2}, Yan Jun^{3, 4}, Li Shuang^{1, 2}, Wang Kai^{3, 4, 5}, Si Ran^{1, 2}, Chen Chong-Yang^{1, 2, †,}

Convergence plot of the different approaches (FCV and VV) of the fine-structure splitting compared to the experimental data for (a) Hf⁴⁵⁺, (b) Ta⁴⁶⁺, (c) W⁴⁷⁺, and (d) Au⁵²⁺ion. The solid lines and the dashed lines respectively represent the differences of FCV and VV from experimental data. The horizontal dashed lines stand for the experimental errors.