[Kr]4d104f13, The final layzer quenched configuration for highly charged ions. (September 2022)

• Record Type: Journal Article
• Authors: Li, M.C.; Zhu, G.L.; Wang, K.; Si, R.; Chen, C.Y.; Brage, T.; Hutton, R.
• Is Part Of: Journal of quantitative spectroscopy & radiative transfer. Volume 287(2022)
• Publication Date: 2022-09
• Subjects: Higly charged ions -- Layzer quenched -- Fine structure energy; Spectrum analysis -- Periodicals; Radiation -- Periodicals; Analyse spectrale -- Périodiques; Rayonnement -- Périodiques; Radiation; Spectrum analysis; Periodicals; 543.0858
• DOI: 10.1016/j.jqsrt.2022.108215
• Languages: English
• ISSNs: 0022-4073

Abstract

Highlights: We have performed calculations of the ground state fine-structure energy for high Z members of the Praseodymium isoelectronic sequence. These are 59-electron systems, and our calculations were made possible by electron re-arrangement for the high-Z members to a [Kr]4 d 10 4 f 13 2 F configuration, which is Layzer-quenched, i.e., the electron correlation is minimal. We have used three different formulations to calculate the self-energy part of the QED correction to the fine-structure energy. Abstract: We discuss the Layzer quenched ground state configuration of [Kr] 4 d 10 4 f 13 along the Praseodymium (Pr) isoelectronic sequence between 80 ≤ Z ≤ 100 . The 2 F fine structure energy is examined from the point of view of the various contirbutions: correlation, frequency-independent and dependent Breit interaction and the two QED terms, self energy and vacuum polarisation. We find the fine structure energy to be dominated by the frequency-independent Breit interaction, correlation is relatively small, which is to be expected for this Layzer-quenched term. We also calculate the self energy using three different formulations, all included in the new version of the GRASP2K codes.