Abstract.
We computed the energy levels, oscillator strengths \(f_{ij}\), the radiative transition rates \(A_{ij}\), the Landé g -factor, the magnetic dipole moment and the electric quadrupole hyperfine constants of the intermediate Rydberg series \(n{\rm s}\) \([k]_{J}\) (\( 4 \le n \le 6\)), \(n{\rm d}\) \( [k]_{J}\) (\(3 \le n \le 4\)), \(n{\rm p}\) \([k]_{J}\) (\(4 \le n \le 5\)) relative to the ground state 3p6 1S0 for neutral argon atom spectra. The values are obtained in the framework of the multiconfiguration Dirac-Hartree-Fock (MCDHF) approach. In this approach, Breit interaction, leading quantum electrodynamics (QED) effects and self-energy correction are taken into account. Moreover, these spectroscopic parameters have been calculated for many levels belonging to the configuration 3p54s, 3p55s, 3p56s, 3p53d, 3p54d, 3p54p, 3p55p as well as for transitions between levels 3p54s-3p54p, 3p54p-3p53d, 3p54p-3p55s, 3p55s-3p55p and 3p55p-3p56s. The large majority of the lines from the 4p-5s and 4p-3d, 5s-5p and 5p-6s transition arrays have been observed and the calculations are consistent with the J -file-sum rule. The obtained theoretical values are compared with previous experimental and theoretical data available in the literature. An overall satisfactory agreement is noticed allowing assessing the reliability of our data.
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Salah, W., Hassouneh, O. Multiconfiguration Dirac-Hartree-Fock energy levels, oscillator strengths, transition probabilities, hyperfine constants and Landé g-factor of intermediate Rydberg series in neutral argon atom. Eur. Phys. J. Plus 132, 160 (2017). https://doi.org/10.1140/epjp/i2017-11436-6
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DOI: https://doi.org/10.1140/epjp/i2017-11436-6