Energy levels and fine-structure intervals of the $1s2l2l'$ core-excited states are calculated for ions along the Li isoelectronic sequence from argon to uranium. The calculation is performed by the relativistic configuration-interaction method adapted for treatment of autoionizing core-excited states. The calculational approach includes the relativistic treatment of the nuclear recoil effect, the leading QED shifts as delivered by the model QED operator, and the frequency dependence of the Breit interaction. The $1s2l2l'-1s^22l$ transition energies are obtained by combining the present results for the $1s2l2l'$ states with energies of the $1s^22l$ states compiled from previous calculations. All theoretical energies are supplied with uncertainty estimates. Our theoretical predictions for the $1s2l2l'-1s^22l$ transitions are significantly more accurate than the best experimental results available today and can be used for calibrating experimental X-ray spectra.

中文翻译：

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类锂离子中核激发的 1s2l2l' 态的能级：氩到铀

对于沿着从氩到铀的 Li 等电子序列的离子，计算了 $1s2l2l'$ 核心激发态的能级和精细结构间隔。该计算是通过适用于处理自电离核激发态的相对论构型相互作用方法进行的。计算方法包括对核反冲效应的相对论处理、模型 QED 算子提供的主要 QED 偏移，以及 Breit 相互作用的频率依赖性。$1s2l2l'-1s^22l$ 跃迁能量是通过将$1s2l2l'$ 状态的当前结果与从先前计算编译的$1s^22l$ 状态的能量相结合而获得的。所有理论能量都提供了不确定性估计。我们对 $1s2l2l' 的理论预测