MCDF-RCI predictions for structure and width of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si0048.gif" overflow="scroll"><mml:mi>K</mml:mi><mml:msub><mml:mrow><mml:mi>α</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>,</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>x-ray line of Al and Si

Kozioł, Karol

doi:10.1016/j.jqsrt.2014.08.009

Cited by 9 publications

(3 citation statements)

References 45 publications

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“…As one can see the correlation effects are small in this case. Similar statement was found for Kα 1,2 lines of Al and Si [53].…”

Section: Resultssupporting

confidence: 87%

Breit and QED contributions in atomic structure calculations of tungsten ions

Kozioł

2020

Journal of Quantitative Spectroscopy and Radiative Transfer

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The Fac, Grasp2k, and Mcdfgme codes are compared in three case study of radiative transitions occurring in tungsten ions: (i) Ni1 and Ni2 lines in Ni-like tungsten, (ii) 3p 3/2 −3p 1/2 hyperfine splitting in Cl-like tungsten, and (iii) Kα 1 and Kα 2 lines in W VIII. Various approaches to include Breit interaction term and QED corrections in atomic calculations are examined. Electron correlation effects are also investigated. The presented data may be used to estimate the theoretical uncertainties relevant to interpretation of high-resolution spectroscopic data.

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“…As one can see the correlation effects are small in this case. Similar statement was found for Kα 1,2 lines of Al and Si [53].…”

Section: Resultssupporting

confidence: 87%

Breit and QED contributions in atomic structure calculations of tungsten ions

Kozioł

2020

Journal of Quantitative Spectroscopy and Radiative Transfer

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“…The fine structure resulting from the interaction between the inner hole and those electrons leads to a number of different levels for a given configuration, each one identified by a particular value of the total angular momentum J and by the electronic coupling [37,38]. In the case of the ground configuration of Ni, [Ar] 3d 8 4s 2 , the interaction of the inner hole with the 3d electrons gives rise to a large set of levels, while for the configuration [Ar] 3d 9 4s the number of possible couplings is somewhat lower (about half) than for the previous case, due to it having only one hole in the 3d shell.…”

Section: B Decay Rates Subshell Widths and Fluorescence And Ck Yieldsmentioning

confidence: 99%

Theoretical and experimental determination of K - and L -shell x-ray relaxation parameters in Ni

et al. 2018

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Fluorescence yields (FY) for the Ni K and L shells were determined by a theoretical and an experimental group within the framework of the International Initiative on X-ray Fundamental Parameters (FPs) collaboration. CosterKronig (CK) parameters were also measured for the L shell of Ni. Theoretical calculations of the same parameters were performed using the Dirac-Fock method, including relativistic and QED corrections. The experimental values for the FY and CK were determined at the PTB laboratory in the synchrotron radiation facility BESSY II, Berlin, Germany, and are compared to the corresponding calculated values.

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“…An x-ray "line" is composed, in general, of a multiplet of lines resulting from fine structure levels as shown in Refs. [11,13,32], and thus when trying to compute the line width one has to sum Equation ( 5) for all of the initial and final levels, i and f , respectively, in the x-ray line manifold,…”

Section: Line Shapesmentioning

confidence: 99%

Fundamental Parameters Related to Selenium Kα and Kβ Emission X-ray Spectra

Guerra

Sampaio

Vília

et al. 2021

Atoms

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We present relativistic ab initio calculations of fundamental parameters for atomic selenium, based on the Multiconfiguration Dirac-Fock method. In detail, fluorescence yields and subshell linewidths, both of K shell, as well as Kβ to Kα intensity ratio are provided, showing overall agreement with previous theoretical calculations and experimental values. Relative intensities were evaluated assuming the same ionization cross-section for the K-shell hole states, leading to a statistical distribution of these initial states. A method for estimating theoretical linewidths of X-ray lines, where the lines are composed by a multiplet of fine-structure levels that are spread in energy, is proposed. This method provides results that are closer to Kα1,2 experimental width values than the usual method, although slightly higher discrepancies occur for the Kβ1,3 lines. This indicates some inaccuracies in the calculation of Auger rates that have a higher contribution for partial linewidths of the subshells involved in the Kβ1,3 profile. Apart from this, the calculated value of Kβ to Kα intensity ratio, which is less sensitive to Auger rates issues, is in excellent agreement with recommended values.

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MCDF-RCI predictions for structure and width ofKα1,2x-ray line of Al and Si

Cited by 9 publications

References 45 publications

Breit and QED contributions in atomic structure calculations of tungsten ions

Breit and QED contributions in atomic structure calculations of tungsten ions

Theoretical and experimental determination of K - and L -shell x-ray relaxation parameters in Ni

Fundamental Parameters Related to Selenium Kα and Kβ Emission X-ray Spectra

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