Radiative rates for E1, E2, M1, and M2 transitions in F-like ions with 37 $\le$ Z $\le$ 53

TL;DR

This paper presents comprehensive calculations of energy levels and radiative transition rates for 17 F-like ions with atomic numbers 37 to 53, using advanced atomic structure codes to improve data accuracy for plasma modeling.

Contribution

The study provides extensive relativistic atomic data for F-like ions, including up to 501 energy levels and all E1, E2, M1, M2 transitions, with cross-validation between GRASP and FAC codes.

Findings

Radiative rates show good agreement between GRASP and FAC calculations.

Energy levels are accurately computed for up to 501 levels per ion.

The data set enhances existing atomic databases for plasma research.

Abstract

Calculations of energy levels, radiative rates and lifetimes are reported for 17 F-like ions with 37 $\le$ Z $\le$ 53. For brevity, results are only presented among the lowest 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, although the calculations have been performed for up to 501 levels in each ion. The general-purpose relativistic atomic structure package (GRASP) has been adopted for the calculations, and radiative rates (along with oscillator strengths and line strengths) are listed for all E1, E2, M1, and M2 transitions of the ions. Comparisons are 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), for up to 72~259 levels. Limited previous results are available for radiative rates for comparison purposes, and no large discrepancy is observed for any transition and/or ion.