Energy levels, absorption oscillator strengths, transition probabilities, polarizabilities, and g factors of Ar13+ ions

Abstract

An accurate determination of various parameters of ${\mathrm{Ar}}^{13+}$ is presented in this work. The wave functions and energy levels of the low-lying states within the configurations of $2{s}^{2}2p$ and $2s2{p}^{2}$ are calculated using the fully relativistic multiconfiguration Dirac-Hartree-Fock method, while the wave functions of higher excited states with the configurations $2{s}^{2}nl\phantom{\rule{4pt}{0ex}}(n\ensuremath{\ge}3$, $l=s,p,d)$ are obtained using the relativistic configuration interaction plus core polarization method. Then, the absorption oscillator strengths, transition probabilities, polarizabilities, and $g$ factors are determined. The contributions of electron correlation effects, Breit interaction, and quantum electrodynamics effects are also investigated. The present results agree well with the available theoretical and experimental results. The $g$ factors of the $2{s}^{2}2p\phantom{\rule{4pt}{0ex}}^{2}P_{1/2,3/2}$ states agree with the experimental measurements on a level of ${10}^{\ensuremath{-}6}$.