Energy levels, radiative rates, and lifetimes for transitions in W LVIII

TL;DR

This paper reports detailed energy levels and radiative rates for transitions in W LVIII, using advanced relativistic atomic structure calculations, providing data crucial for plasma modeling and spectroscopic analysis.

Contribution

The study presents comprehensive energy levels and radiative rates for W LVIII using extensive configuration interaction and two atomic codes, enhancing the accuracy and availability of atomic data for this ion.

Findings

Energy levels are accurate to better than 0.5%.

Radiative rates are accurate to better than 20% for strong transitions.

Data covers 400 lowest energy levels and multiple transition types.

Abstract

Energy levels and radiative rates are reported for transitions in Cl-like W LVIII. Configuration interaction (CI) has been included among 44 configurations (generating 4978 levels) over a wide energy range up to 363 Ryd, and the general-purpose relativistic atomic structure package ({\sc grasp}) adopted for the calculations. Since no other results of comparable complexity are available, calculations have also been performed with the flexible atomic code ({\sc fac}), which help in assessing the accuracy of our results. Energies are listed for the lowest 400 levels (with energies up to $\sim$ 98 Ryd), which mainly belong to the 3s$^2$3p$^5$, 3s3p$^6$, 3s$^2$3p$^4$3d, 3s$^2$3p$^3$3d$^2$, 3s3p$^4$3d$^2$, 3s$^2$3p$^2$3d$^3$, and 3p$^6$3d configurations, and radiative rates are provided for four types of transitions, i.e. E1, E2, M1, and M2. Our energy levels are assessed to be accurate to better than 0.5%, whereas radiative rates (and lifetimes) should be accurate to better than 20% for a majority of the strong transitions.