Extended calculations of energy levels, radiative properties, $A_{J}$, $B_{J}$ hyperfine interaction constants, and Land\'e $g_{J}$-factors for nitrogen-like \mbox{Ge XXVI}

TL;DR

This paper presents highly accurate calculations of energy levels, transition properties, and hyperfine constants for nitrogen-like Ge XXVI using advanced quantum mechanical methods, providing comprehensive atomic data for plasma diagnostics.

Contribution

The study offers the first extensive, consistent dataset of atomic parameters for Ge XXVI's 272 levels using two state-of-the-art computational methods, enhancing accuracy over previous data.

Findings

Calculated 272 energy levels and transition data with high precision.

Provided hyperfine constants and Landé g-factors for detailed spectral analysis.

Data useful for plasma modeling and emission line identification.

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 272 fine-structure levels arising from the $2s^{2} 2p^{3}$, $2s 2p^{4}$, $2p^{5}$, $2s^{2} 2p^{2} 3l$~($l=s,p,d$), $2s 2p^{3}3l$ ($l=s,p,d$), and $2p^{4} 3l$ ($l=s,p,d$) configurations in nitrogen-like Ge XXVI. Complete and consistent atomic data, including excitation energies, lifetimes, wavelengths, hyperfine structures, Land\'e $g_{J}$-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.