Benchmarking calculations of wavelengths and transition rates with spectroscopic accuracy for W XLVIII through W LVI tungsten ions

Zhang, Chun Yu and Li, Jin Qing and Wang, Kai and Si, Ran and Godefroid, Michel and Jönsson, Per and Xiao, Jun and Gu, Ming Feng and Chen, Chong Yang (2022) Benchmarking calculations of wavelengths and transition rates with spectroscopic accuracy for W XLVIII through W LVI tungsten ions. Physical Review A, 105 (2). 022817. ISSN 2469-9926 (https://doi.org/10.1103/physreva.105.022817)

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Abstract

Atomic properties of n=3 levels for W47+-W55+ ions (Z=74) are systematically calculated using two different and independent methods, namely, the second-order many-body perturbation theory and the multiconfiguration Dirac-Hartree-Fock method combined with the relativistic configuration interaction approach. Wavelengths and transition rates for electric-and magnetic-dipole transitions involving the n=3 levels of W47+-W55+ are calculated. In addition, we discuss in detail the importance of the valence and core-valence electron correlations, the Breit interaction, the higher-order frequency-dependent retardation correction, and the leading quantum electrodynamical corrections for transition wavelengths. Spectroscopic accuracy is achieved for the present calculated wavelengths, and most of them agree with experimental values within 0.05%. Our calculated wavelengths, combined with collisional radiative model simulations, are used to identify the yet unidentified 25 observed lines in the extremely complex spectrum between 27Å and 34Å measured by Lennartsson etal. [Phys. Rev. A 87, 062505 (2013)10.1103/PhysRevA.87.062505]. We provide additional data for 472 strong electric-dipole transitions in the wavelength range of 17-50 Å, and 185 strong magnetic-dipole transitions between 36Å and 4384Å, with a line intensity greater than 1photon/s. These can provide benchmark data for future experiments and theoretical calculations.

  • Item type:Article
    ID code:82603
    Dates:
    Date
    Event
    22 February 2022
    Published
    1 February 2022
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:06 Oct 2022 10:17
    Last modified:09 Apr 2024 03:34
    URI:https://strathprints.strath.ac.uk/id/eprint/82603
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