Benchmarking calculations of excitation energies and transition properties with spectroscopic accuracy of highly charged ions used for the fusion plasma and astrophysical plasma

doi:10.1088/1674-1056/acef07

Abstract Atomic radiative data such as excitation energies, transition wavelengths, radiative rates, and level lifetimes with high precision are the essential parameters for the abundance analysis, simulation, and diagnostics in fusion and astrophysical plasmas. In this work, we mainly focus on reviewing our two projects performed in the past decade. One is about the ions with $Z\lesssim 30$ that are generally of astrophysical interest, and the other one is about the highly charged krypton (Z=36) and tungsten (Z=74) ions that are relevant in research of magnetic confinement fusion. Two different and independent methods, namely, multiconfiguration Dirac-Hartree-Fock (MCDHF) and the relativistic many-body perturbation theory (RMBPT) are usually used in our studies. As a complement/extension to our previous works for highly charged tungsten ions with open M-shell and open N-shell, we also mainly focus on presenting and discussing our complete RMBPT and MCDHF calculations for the excitation energies, wavelengths, electric dipole (E1), magnetic dipole (M1), electric quadrupole (E2), and magnetic quadrupole (M2) transition properties, and level lifetimes for the lowest 148 levels belonging to the 3l³ configurations in Al-like W⁶¹⁺. We also summarize the uncertainties of our systematical theoretical calculations, by cross-checking/validating our datasets from our RMBPT and MCDHF calculations, and by detailed comparisons with available accurate observations and other theoretical calculations. The data are openly available in Science Data Bank at https://doi.org/10.57760/sciencedb.10569.

Keywords: energy levels transition rates highly charged ions relativistic many-body perturbation theory (RMBPT) multi-configuration Dirac-Hartree-Fock (MCDHF) benchmarking calculations excitation energies spectroscopic accuracy

Received: 27 May 2023
Revised: 23 July 2023
Accepted manuscript online: 11 August 2023

PACS:	31.15.ag	(Excitation energies and lifetimes; oscillator strengths)
	31.15.aj	(Relativistic corrections, spin-orbit effects, fine structure; hyperfine structure)
	31.15.am	(Relativistic configuration interaction (CI) and many-body perturbation calculations)

Fund: We acknowledge the support from the National Natural Science Foundation of China (Grant Nos. 12074081 and 12104095). Many works reviewed here are accomplished in close collaboration with other groups, such as members of the CompAS group, and M. F. Gu (author of the FAC code), etc.

Corresponding Authors: Kai Wang, Ran Si, Chongyang Chen
E-mail: wang_kai10@fudan.edu.cn;rsi@fudan.edu.cn;chychen@fudan.edu.cn

Cite this article:

Chunyu Zhang(张春雨), Kai Wang(王凯), Ran Si(司然), Jinqing Li(李金晴), Changxian Song(宋昌仙), Sijie Wu(吴思捷), Bishuang Yan(严碧霜), and Chongyang Chen(陈重阳) Benchmarking calculations of excitation energies and transition properties with spectroscopic accuracy of highly charged ions used for the fusion plasma and astrophysical plasma 2023 Chin. Phys. B 32 113102

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Benchmarking calculations of excitation energies and transition properties with spectroscopic accuracy of highly charged ions used for the fusion plasma and astrophysical plasma

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