The aim of this work is to provide energy level calculations among the lowest 71 levels arising out of \(1s^{2}\) and 1snl (\(n\le 6\), \(l\le (n-1)\)) configurations of He-like lithium. The calculations are carried out through the relativistic configuration interaction approach and the second-order many-body perturbation theory implemented in the flexible atomic code. We provide accurate calculations of energy levels, lifetimes, wavelengths, weighted oscillator strengths and radiative rates for the allowed (E1) transitions of He-like lithium. We have also considered relativistic effects by incorporating quantum electrodynamics and Breit corrections. The radiative lifetimes are reported for all the calculated levels. The present results are in good agreement with the previous results in literature (theoretical and experimental data). Several new energy levels and wavelengths were found out where no other theoretical or experimental results are available. We expect that our extensive calculations will be useful to experimentalists for identifying the fine-structure levels.

这项工作的目的是在由\(1s^{2}\)和 1 snl ( \(n\le 6\) , \(l\le (n-1 )\) ) 类氦锂的构型。计算是通过相对论构型相互作用方法和灵活原子代码中实现的二阶多体微扰理论进行的。我们为允许的 ( E)提供能级、寿命、波长、加权振荡器强度和辐射率的准确计算1）类氦锂的跃迁。我们还通过结合量子电动力学和 Breit 校正考虑了相对论效应。报告了所有计算水平的辐射寿命。目前的结果与文献中的先前结果（理论和实验数据）非常吻合。在没有其他理论或实验结果可用的情况下，发现了几个新的能级和波长。我们希望我们的广泛计算对实验者识别精细结构水平有用。