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-dependent crossing of excited-state energy levels in highly charged galliumlike lanthanide atomic ions

Koike, Fumihiro; Suzuki, C.; Murakami, Izumi; Kato, Daiji; Tamura, N.; Nakamura, Nobuyuki

doi:10.1103/physreva.105.032802

Cited by 2 publications

(2 citation statements)

References 59 publications

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“…As mentioned in the introduction, EUV and soft X-ray spectra of Ga-like heavy ions are composed of a few isolated lines. Among them, we have already reported the wavelengths of the resonance transition from the level designated as (4d − ) 3/2 configuration in our recent paper [29], in which we clarified that the peculiar Z dependence of the transition wavelength is caused by strong Z-dependent mixing between the configurations (4d − ) 3/2 and (4s, (4p 2 + ) 2 ) 3/2 . Therefore, this paper describes the other resonance transitions, including a magnetic dipole (M1) transition.…”

Section: Resultsmentioning

confidence: 56%

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Detailed Analysis of Spectra from Ga-like Ions of Heavy Elements Observed in High-Temperature Plasmas

Suzuki

Koike

Murakami

et al. 2023

Atoms

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This study has systematically investigated the atomic number (Z) dependence of spectra from gallium-like (Ga-like) ions of heavy elements. We have mainly analyzed the experimental spectra recorded in high-temperature plasmas produced in the Large Helical Device (LHD) for various elements with atomic numbers from 57 onward. The measured wavelengths are compared with theoretical values calculated with a multi-configuration Dirac Fock code. As a result, we have successfully obtained Z-dependent wavelengths of several prominent transitions of Ga-like ions, including a magnetic dipole (M1) transition. Many of them have been experimentally identified for the first time in this study. The present results manifest the significant effects of configuration interaction and spin–orbit interaction for highly charged heavy ions.

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Section: Resultsmentioning

confidence: 56%

“…The single electron orbitals are optimized stepwise by increasing the number of CSFs until the calculated transition wavelengths are well converged. The detailed procedure for this optimization has already been described in our recent paper [29]. In addition, transition strengths are calculated with RATIP code from GRASP92 output [30].…”

Section: Methodsmentioning

confidence: 99%

Detailed Analysis of Spectra from Ga-like Ions of Heavy Elements Observed in High-Temperature Plasmas

Suzuki

Koike

Murakami

et al. 2023

Atoms

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Effect of the configuration mixing on the polarization and angular distribution of x-ray line emissions following electron-impact excitation of Ne-like ions

Yang,

Chen,

Zhong

et al. 2024

Opt. Express

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We present a systematic theoretical study on the angular distribution and linear polarization of x-ray line emissions of neon-like ions following the electron-impact excitation from the ground state to the excited levels [(2p5)1/23d3/2]J=1, [(2p5)3/23d5/2]J=1, [(2p5)3/23d3/2]J=1, and [(2p5)1/23s]J=1. The cross sections are calculated by using the flexible atomic code under configuration-interaction plus many-body perturbation theory method. The angular distribution and linear polarization are obtained based on density matrix theory. Emphasis has been placed on the effect of the configuration mixing on the angular distribution and polarization. It has been proved that the strong mixing of configuration [(2p5)3/23d3/2]J=1 with configuration [(2p5)1/23s]J=1 can result in the abrupt change of Z-dependence of angular distribution and polarization. It indicates that angular distribution and polarization can be expected to serve as a tool for investigation of configuration mixing effect.

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Z -dependent crossing of excited-state energy levels in highly charged galliumlike lanthanide atomic ions

Cited by 2 publications

References 59 publications

Detailed Analysis of Spectra from Ga-like Ions of Heavy Elements Observed in High-Temperature Plasmas

Detailed Analysis of Spectra from Ga-like Ions of Heavy Elements Observed in High-Temperature Plasmas

Effect of the configuration mixing on the polarization and angular distribution of x-ray line emissions following electron-impact excitation of Ne-like ions

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