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Guo-Qing Peng(彭国庆), Kai Wang(王凯), Jun Yan(颜君), and Wei Kang(康炜). 2025: Detailed discussion of discrepancy between theoretical and observed spectral lines in Kr-like W38+ based on advanced consideration of core electron correlations, Chinese Physics B, 34(5): 053101. doi: 10.1088/1674-1056/adbdbe
Citation: Guo-Qing Peng(彭国庆), Kai Wang(王凯), Jun Yan(颜君), and Wei Kang(康炜). 2025: Detailed discussion of discrepancy between theoretical and observed spectral lines in Kr-like W38+ based on advanced consideration of core electron correlations, Chinese Physics B, 34(5): 053101. doi: 10.1088/1674-1056/adbdbe
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Detailed discussion of discrepancy between theoretical and observed spectral lines in Kr-like W38+ based on advanced consideration of core electron correlations

  • 1 Center for Applied Physics and Technology, Peking University, Beijing 100871, China;

  • 2 Department of Physics and Anhui Key Laboratory of Optoelectric Materials Science and Technology, Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Normal University, Wuhu 241000, China;

  • 3 Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

  • Received Date: 02/01/2025
    Accepted Date: 21/02/2025
  • Fund Project:

    Project supported by the Science Challenge Project of China Academy of Engineering Physics (CAEP) (Grant No. TZ2018005) and the National Natural Science Foundation of China (Grant Nos. 12474277, 12374259, 12104095, 12074081, and 12074082).

  • PACS: 31.15.vj; 31.15.am; 31.15.xp; 32.70.Cs

  • For the observed line at 799.23 Å in tungsten EBIT experiment, which was assigned to be $^{3}{\rm F}_{4}^{\rm o}-^{3}{\rm F}_{3}^{\rm o}$ ${\rm ([{\rm Ar}]4s^24{\rm p}^{5}{\rm 4d})}$ of W$^{38+}$ ion, there were noticeable deviations for most calculated wavelengths from the measured value. To clarify this issue, we carry out an extensive calculation for energy levels and transition properties of W$^{38+}$ ion using the multi-configuration Dirac-Hartree-Fock and relativistic configuration interaction method, in which more deeper inner core electron correlations are included, and different forms of Breit interaction as well as quantum electrodynamics corrections are investigated. It is found that the inner core electron correlations can affect the total energy of levels, while only slightly modify the excited energy of levels in 4s$^2$4p$^{5}$4d complex. The present calculated wavelengths agree with the corresponding measured values excellently except the line at 799.23 Å. Thus we are strongly suspicious this line should be misidentified, and suggest that new experiment with higher resolution and spectra analysis based on more accurate atomic data should be performed for W$^{38+}$ ion.
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Detailed discussion of discrepancy between theoretical and observed spectral lines in Kr-like W38+ based on advanced consideration of core electron correlations

  • Received Date: 02/01/2025
  • Accepted Date: 21/02/2025
Fund Project: 

Abstract: For the observed line at 799.23 Å in tungsten EBIT experiment, which was assigned to be $^{3}{\rm F}_{4}^{\rm o}-^{3}{\rm F}_{3}^{\rm o}$ ${\rm ([{\rm Ar}]4s^24{\rm p}^{5}{\rm 4d})}$ of W$^{38+}$ ion, there were noticeable deviations for most calculated wavelengths from the measured value. To clarify this issue, we carry out an extensive calculation for energy levels and transition properties of W$^{38+}$ ion using the multi-configuration Dirac-Hartree-Fock and relativistic configuration interaction method, in which more deeper inner core electron correlations are included, and different forms of Breit interaction as well as quantum electrodynamics corrections are investigated. It is found that the inner core electron correlations can affect the total energy of levels, while only slightly modify the excited energy of levels in 4s$^2$4p$^{5}$4d complex. The present calculated wavelengths agree with the corresponding measured values excellently except the line at 799.23 Å. Thus we are strongly suspicious this line should be misidentified, and suggest that new experiment with higher resolution and spectra analysis based on more accurate atomic data should be performed for W$^{38+}$ ion.

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