Extensive and accurate energy levels and transition rates for Al-like Zn XVIII

Si, R.; Zhang, Chun Yu; Liu, Y.W.; Chen, Zhan-Bin; Guo, Xueling; Li, S.; Yan, Jun; Chen, C.Y.; Wang, Kai

doi:10.1016/j.jqsrt.2016.12.006

Cited by 22 publications

(4 citation statements)

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“…Further, the present work aims at providing a consistent and accurate set of transition rates for all the ions, for modeling purposes. This work is an extension of our previous efforts (Chen et al 2018(Chen et al , 2017Guo et al 2016;Guo et al 2015;Jönsson et al 2014Jönsson et al 2011;Wang et al 2018aWang et al ,b, 2017aWang et al ,b,c,d, 2016aWang et al ,b, 2015Wang et al , 2014Si et al 2017Si et al , 2016Zhao et al 2017) to supply highly accurate atomic data for L-and M-shell systems, see Jönsson et al (2017) for a review.…”

mentioning

confidence: 79%

Energy Levels, Lifetimes, and Transition Rates for P-like Ions from Cr x to Zn xvi from Large-scale Relativistic Multiconfiguration Calculations

Wang¹,

Jönsson²,

Gaigalas³

et al. 2018

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The fully relativistic multiconfiguration Dirac-Hartree-Fock method is used to compute excitation energies and lifetimes for the 143 lowest states of the 3s 2 3p 3 , 3s3p 4 , 3s 2 3p 2 3d, 3s3p 3 3d, 3p 5 , 3s 2 3p3d 2 configurations in P-like ions from Cr X to Zn XVI. Multipole (E1, M1, E2, M2) transition rates, line strengths, oscillator strengths, and branching fractions among these states are also given. Valencevalence and core-valence electron correlation effects are systematically accounted for using large basis function expansions. Computed excitation energies are compared with the NIST ASD and CHIANTI compiled values and previous calculations. The mean average absolute difference, removing obvious outliers, between computed and observed energies for the 41 lowest identified levels in Fe XII is only 0.057 %, implying that the computed energies are accurate enough to aid identification of new emission lines from the sun and other astrophysical sources. The amount of energy and transition data of high accuracy is significantly increased for several P-like ions of astrophysics interest, where experimental data are still very scarce.

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confidence: 79%

Energy Levels, Lifetimes, and Transition Rates for P-like Ions from Cr x to Zn xvi from Large-scale Relativistic Multiconfiguration Calculations

Wang¹,

Jönsson²,

Gaigalas³

et al. 2018

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“…Two different state-of-the-art fully relativistic methods-MCDHF implemented in the GRASP2K package and RMBPT integrated in the flexible atomic code (FAC) [35]are used to perform the calculations. Both of the methods have been successfully used to calculate atomic parameters of high accuracy [15,30,31,[36][37][38][39][40][41][42][43][44]. Since they are described in detail elsewhere, we only give an outline of these methods here.…”

Section: Theoretical Methodsmentioning

confidence: 99%

Accurate study on the properties of spectral lines for Br-like W³⁹⁺

Guo

et al. 2017

J. Phys. B: At. Mol. Opt. Phys.

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As a primary candidate in tokamak plasmas, the spectroscopic parameters of tungsten ions have been studied extensively over the past decade. In this paper, we perform calculations of excitation energies, lifetimes, wavelengths and transition rates for all levels of the s p 4 4 2 5 , s p d 4 4 4 2 4, and s p 4 4 6 configurations of + W 39 by using the multiconfiguration Dirac-Hartree-Fock (MCDHF) method, and also the relativistic many-body perturbation theory (RMBPT) method. Detailed convergence studies on excitation energy from electron-correlation effects and relativistic effects are presented. It is necessary to include the core-valence correlation from deep lying subshells, e.g. d 3 and p 3 , to produce reliable atomic parameters. Results are compared with available theoretical and experimental work, and the accuracy of the results is confirmed.

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“…The other aim of the present study is to offer a consistent set of transition rates with high accuracy for all the ions for spectral line modeling. This study is an extension of our previous calculations (Jönsson et al 2011(Jönsson et al , 2014Wang et al 2014Wang et al , 2015Wang et al , 2016aWang et al , 2016bWang et al , 2017aWang et al , 2017bWang et al , 2017cWang et al , 2017dWang et al , 2018aWang et al , 2018cGuo et al 2015Guo et al , 2016Si et al 2016Si et al , 2017Chen et al 2017Chen et al , 2018Zhao et al 2018) for offering atomic data with high accuracy for L-and M-shell systems.…”

Section: Introductionmentioning

confidence: 94%

Benchmarking Atomic Data from Large-scale Multiconfiguration Dirac–Hartree–Fock Calculations for Astrophysics: S-like Ions from Cr ix to Cu xiv

Wang

Song

Jönsson

et al. 2018

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We present a consistent set of calculated energies and E1, M1, E2, M2 radiative transition data for the main n=3 levels from the 3s 2 3p 4 , 3p 6 , s p d 3 3 3 4 configurations, producing the strongest lines, are found to be in good agreement, reaching spectroscopic accuracy, with the latest experimental values for Fe XI evaluated by Del Zanna. Our energies can reliably be used to identify in astrophysical and laboratory spectra the s p d 3 3 3 2 3 levels in other S-like ions, which are mostly unknown. On the contrary, significant discrepancies with the 3s3p 4 3d levels were found, emphasizing the need for more detailed experimental studies. A few new tentative identifications are suggested. The benchmarks we present indicate that our consistent set of radiative data is accurate and can be used for spectral line modeling.

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Extensive and accurate energy levels and transition rates for Al-like Zn XVIII

Cited by 22 publications

References 50 publications

Energy Levels, Lifetimes, and Transition Rates for P-like Ions from Cr x to Zn xvi from Large-scale Relativistic Multiconfiguration Calculations

Energy Levels, Lifetimes, and Transition Rates for P-like Ions from Cr x to Zn xvi from Large-scale Relativistic Multiconfiguration Calculations

Accurate study on the properties of spectral lines for Br-like W³⁹⁺

Benchmarking Atomic Data from Large-scale Multiconfiguration Dirac–Hartree–Fock Calculations for Astrophysics: S-like Ions from Cr ix to Cu xiv

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Extensive and accurate energy levels and transition rates for Al-like Zn XVIII

Cited by 22 publications

References 50 publications

Energy Levels, Lifetimes, and Transition Rates for P-like Ions from Cr x to Zn xvi from Large-scale Relativistic Multiconfiguration Calculations

Energy Levels, Lifetimes, and Transition Rates for P-like Ions from Cr x to Zn xvi from Large-scale Relativistic Multiconfiguration Calculations

Accurate study on the properties of spectral lines for Br-like W39+

Benchmarking Atomic Data from Large-scale Multiconfiguration Dirac–Hartree–Fock Calculations for Astrophysics: S-like Ions from Cr ix to Cu xiv

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Accurate study on the properties of spectral lines for Br-like W³⁹⁺