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The atomic energy level structures and transition properties of 1s22s22p2 ground configuration and 1s22s2p3 excited configuration in carbon-like ions with Z=10, 14, 32, 36, 50 are investigated theoretically with fully relativistic multi-configuration Dirac-Hartree-Fock (MCDHF) method.
Based on the wavefunction constructed with careful considerations of electron correlations, the theoretical calculations are completed with careful considerations of the Breit interaction, quantum electrodynamic effect and nuclear mass effect. Then the effects of three types of electron correlations, namely valence-valence, core-valence, and core-core correlations, on energy levels are studied in detail, and high-precision excitation energies are obtained. Compared with other theoretical results, the excitation energies for Ne V ion calculated are the closest to the NIST (National Institute of Standards and Technology) data, the excitation energies of other ions also possess relatively high precision. Additionally, combining the NIST data and the atomic state compositions of LS-coupling, the ambiguity in identifying atomic states generated from the code is analyzed, and the corresponding renamed atomic states are presented.
For electric dipole transitions, the transition wavelengths of Ne V and Si IX ions reported in this work and available NIST data have goodagreements, the relative errors are less than 0.62%. The transition rates of them are in good agreement with those of other theoretical results. And for majority of electric dipole transitions, the electric dipole transition parameters calculated in Babushkin and Coulomb gauges have excellent agreement with each other, which demonstrate the feasibility and reliability of the MCDHF method for theoretical calculations on energy structures and spectral properties of 1s22s22p2 and 1s22s2p3 configurations in carbon-like ions. The results presented cover a wide range of levels and transitions for carbon-like ions, it's expected that the data will enrich the fundamental database for carbon-like ions and provide valuable theoretical references for related studies.
The datasets presented in this paper are openly available at https://www.doi.org/[10.57760/sciencedb.j00213.00145](https://www.sci db.cn/s/6NzMzi)-
Keywords:
- carbon-like ion /
- MCDHF method /
- energy level /
- electric dipole transition
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