Abstract: This communication presents the results of wavelength calculations for neon-like ions to verify the resonance condition for a recently proposed x-ray laser scheme which is resonantly photopumped by Ly-$alpha radiation from H-like Mg and which would lase on several 2p yields 2s transitions in Ne-like Ge. The energies of the excited and ground states were obtained using multiconfigurational Dirac-Fock (MCDF) method with the employment of different methods of the energy functional optimization. Particular attention has been given to the evaluation of the correlation corrections to the transition energies of neon-like ions within the combined MCDF$PLU@MZ approach, which uses the results of the MCDF calculations along with the Z-expansion data. !38
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机译：摘要：本通讯介绍了类似氖离子的波长计算结果，以验证最近提出的X射线激光方案的共振条件，该方案由H样Mg的Ly- $ alpha辐射共振光泵浦，并会在多个2p在类似Ne的Ge中产生2s跃迁。激发态和基态的能量是使用多构型狄拉克-福克（MCDF）方法获得的，并采用了不同的能量功能优化方法。在组合的MCDF $ PLU @ MZ方法中，已特别重视对类氖离子跃迁能的相关校正的评估，该方法将MCDF计算的结果与Z扩展数据一起使用。 ！38
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