Energy Levels and Radiative Rates for Transitions in F-like Sc XIII and Ne-like Sc XII and Y XXX

Kanti Aggarwal

doi:10.3390/atoms6020025

Abstract

Energy levels, radiative rates and lifetimes are reported for F-like Sc XIII and Ne-like Sc XII and Y XXX for which the general-purpose relativistic atomic structure package (GRASP) has been adopted. For all three ions, limited data exist in the literature but comparisons have been made wherever possible to assess the accuracy of the calculations. In the present work, the lowest 102, 125 and 139 levels have been considered for the respective ions. Additionally, calculations have also been performed with the flexible atomic code (FAC) to (particularly) confirm the accuracy of energy levels.

Highlights

Atomic data for several parameters, including energy levels and radiative rates, are required for the diagnostics and modelling of plasmas
We report atomic data for F-like Sc XIII and Ne-like
Energy levels have been reported for three ions, namely F-like Sc XIII and Ne-like

Summary

Introduction

Atomic data for several parameters, including energy levels and radiative rates, are required for the diagnostics and modelling of plasmas. Energy levels and radiative rates (A-values) have been determined for several ions of the F sequence of which the work by Jönsson et al [3] is the latest, and the most accurate because differences with the measurements are minimal for the energy levels. They calculated data only for the lowest three levels of the 2s2 2p5 and 2s2p6 configurations, which are not sufficient for modelling of plasmas because the data are required for a wider range of levels. Our aim is to report a complete set of data for energies and lifetimes for a larger number of levels for all three above named ions and A-values for all transitions among their levels, for the dominant allowed electric dipole (E1) type, and for electric quadrupole (E2), magnetic dipole (M1), and magnetic quadrupole (M2), which are required for complete and reliable plasma models, but are useful for more accurate determination of lifetimes

Energy Levels

Sc XIII

Sc XII

Radiative Rates

Findings

Conclusions