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Abstract Employing two state-of-the-art methods, multiconfiguration Dirac–Hartree–Fock and second-order many-body perturbation theory, highly accurate calculations are performed for the lowest 200 fine-structure levels arising from the 2 l 7 , 2 l 6 3 l ′ and 2 l 6 4 l ′ configurations of the fluorine-like isoelectronic sequence with Z = 31 − 35. Complete and consistent atomic data, including excitation energies, lifetimes, wavelengths, and E1, E2, M1, M2 line strengths, oscillator strengths, and transition rates among these 200 levels are provided. Comparisons are made between the present two data sets, as well as with other available experimental and theoretical values. The present data are accurate enough for identification and deblending of emission lines involving the n = 3 , 4 levels, and are also useful for modeling and diagnosing fusion plasmas. [ABSTRACT FROM AUTHOR]

Employing two state-of-the-art methods, multiconfiguration Dirac–Hartree–Fock and second-order many-body perturbation theory, highly accurate calculations are performed for the lowest 272 fine-structure levels arising from the 2 s 2 2 p 3 , 2 s 2 p 4 , 2 p 5 , 2 s 2 2 p 2 3 l ( l = s , p , d ), 2 s 2 p 3 3 l ( l = s , p , d ), and 2 p 4 3 l ( l = s , p , d ) configurations in nitrogen-like Ge XXVI. Complete and consistent atomic data, including excitation energies, lifetimes, wavelengths, hyperfine structures, Landé g J -factors, and E1, E2, M1, M2 line strengths, oscillator strengths, and transition rates among these 272 levels are provided. Comparisons are made between the present two data sets, as well as with other available experimental and theoretical values. The present data are accurate enough for identification and deblending of emission lines involving the n = 3 levels, and are also useful for modeling and diagnosing fusion plasmas. [ABSTRACT FROM AUTHOR]

The excitation energies, lifetimes, wavelengths and E1, E2, M1 and M2 transition rates for the lowest 389 levels of the 2 l 7 , 2 l 6 3 l ′, 2 l 6 4 l ′, and 2 l 6 5 l ′ configurations from second-order many-body perturbation theory (MBPT) calculations, and the results for the lowest 200 states of the 2 l 7 , 2 l 6 3 l ′, and 2 l 6 4 l ′ configurations from multi-configuration Dirac-Hartree-Fock (MCDHF) calculations in F-like Kr XXVIII are presented in this work. The relative differences between our two sets of level energies are mostly within 0.005% for the lowest 200 levels. Comparisons are made with experimental and other available theoretical results to assess the reliability and accuracy of the present calculations. We believe them to be the most complete and accurate results for Kr XXVIII at present. [ABSTRACT FROM AUTHOR]

Energy levels and transition rates for electric-dipole (E1), electric-quadrupole (E2), magnetic-dipole (M1), and magnetic-quadrupole (M2) transitions of the lowest 393 levels arising from the 3l 3 ( 0 ≤ l ⩽ 2 ), 3 s 2 4 l ( 0 ≤ l ⩽ 3 ), 3 s 3 p 4 l ( 0 ≤ l ⩽ 3 ), 3 p 2 4 l ( 0 ≤ l ⩽ 2 ), 3 s 3 d 4 l ( 0 ≤ l ⩽ 1 ), and 3 s 2 5 l ( 0 ≤ l ⩽ 4 ) configurations in Al-like Zn are calculated through the multi-configuration Dirac-Hartree-Fock (MCDHF) method and second-order many-body perturbation theory (MBPT). In the MCDHF calculation, valence-valence and core-valence correlations with the 2 p and 2 s electrons are taken into account. The effect of Breit interaction and quantum electrodynamics corrections on excitation level energies and level lifetimes are assessed though the MCDHF and MBPT calculations. The two sets of level energies are in excellent agreement of better than 0.1%, while the level lifetimes mostly agree to within 2%. Comparisons are also made with experimental measurements and other theoretical results to assess the accuracy of our calculations. [ABSTRACT FROM AUTHOR]

Theoretical calculations of Ga-like to Br-like gadolinium ions were performed by using the fully relativistic multi-configuration Dirac–Hartree–Fock (MCDHF) method. Extensive lists of excitation energies, wavelengths, line and oscillator strengths, and E1, M1, E2, M2, and E3 transition rates are presented. The effects of core–valence electron correlation from the deep subshells 3 d and 3 p are investigated and the accuracy of the results is confirmed by comparing with available theoretical and experimental data sets. [ABSTRACT FROM AUTHOR]