Radiative rates for E1, E2, M1, and M2 transitions in F-like ions with 55 <= Z <= 73

TL;DR

This paper provides comprehensive calculations of energy levels, radiative rates, and lifetimes for 19 F-like ions with atomic numbers 55 to 73, using advanced atomic structure codes to improve accuracy and compare with existing data.

Contribution

It presents new, detailed atomic data for F-like ions across a wide Z range, utilizing both GRASP and FAC codes with extensive configuration interaction for enhanced precision.

Findings

Radiative rates and lifetimes are reported for 19 F-like ions.

Comparisons show good agreement with previous theoretical and experimental data.

Extensive configuration interaction improves the accuracy of energy level calculations.

Abstract

Energy levels, radiative rates and lifetimes are reported for 19 F-like ions with 55 $\le$ Z $\le$ 73, among 113 levels of the 2s$^2$2p$^5$, 2s2p$^6$, 2s$^2$2p$^4$3$\ell$, 2s2p$^5$3$\ell$, and 2p$^6$3$\ell$ configurations. The general-purpose relativistic atomic structure package (GRASP) has been adopted for the calculations, and radiative rates (and other associated parameters, such as oscillator strengths and line strengths) are listed for all E1, E2, M1, and M2 transitions of the ions. Comparisons are made with earlier available theoretical and experimental energies, especially for Ba~XLVIII. Nevertheless, calculations have also been performed with the flexible atomic code (FAC), and with a much larger configuration interaction with up to 38~089 levels, for further accuracy assessments, particularly for energy levels.