Benchmarking a modified version of the civ3 nonrelativistic atomic-structure code within Na-like-tungsten R -matrix calculations

M. D. Turkington*, C. P. Ballance, A. Hibbert, C. A. Ramsbottom

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
277 Downloads (Pure)

Abstract

In this work we explore the validity of employing a modified version of the nonrelativistic structure code civ3 for heavy, highly charged systems, using Na-like tungsten as a simple benchmark. Consequently, we present radiative and subsequent collisional atomic data compared with corresponding results from a fully relativistic structure and collisional model. Our motivation for this line of study is to benchmark civ3 against the relativistic grasp0 structure code. This is an important study as civ3 wave functions in nonrelativistic R-matrix calculations are computationally less expensive than their Dirac counterparts. There are very few existing data for the W LXIV ion in the literature with which we can compare except for an incomplete set of energy levels available from the NIST database. The overall accuracy of the present results is thus determined by the comparison between the civ3 and grasp0 structure codes alongside collisional atomic data computed by the R-matrix Breit-Pauli and Dirac codes. It is found that the electron-impact collision strengths and effective collision strengths computed by these differing methods are in good general agreement for the majority of the transitions considered, across a broad range of electron temperatures.

Original languageEnglish
Article number022508
Number of pages9
JournalPhysical Review A (Atomic, Molecular, and Optical Physics)
Volume94
Issue number2
DOIs
Publication statusPublished - 17 Aug 2016

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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