Radiative rates for E1, E2, M1, and M2 transitions in S-like to F-like tungsten ions (W LIX to W LXVI)

TL;DR

This paper presents comprehensive calculations of energy levels and radiative transition rates for tungsten ions from S-like to F-like, using advanced atomic structure codes to improve data accuracy for plasma modeling.

Contribution

It provides extensive relativistic calculations of radiative rates and energy levels for multiple tungsten ions, including configuration interactions and comparisons with existing data.

Findings

Calculated energy levels and radiative rates for W LIX to W LXVI.

Included extensive configuration interaction for accuracy.

Compared results with experimental and other theoretical data.

Abstract

Calculations of energy levels, radiative rates and lifetimes are reported for eight ions of tungsten, i.e. S-like (W LIX) to F-like (W LXVI). A large number of levels has been considered for each ion and extensive configuration interaction has been included among a range of configurations. For the calculations, the general-purpose relativistic atomic structure package (GRASP) has been adopted, and radiative rates (as well as oscillator strengths and line strengths) are listed for all E1, E2, M1, and M2 transitions of the ions. Comparisons have been made with earlier available experimental and theoretical energies, although these are limited to only a few levels for most ions. Therefore for additional accuracy assessments, particularly for energy levels, analogous calculations have been performed with the flexible atomic code (FAC).