https://doi.org/10.1140/epjd/s10053-024-00876-w
Regular Article - Atomic Physics
Radiative and electron-impact transitions of W I for spectroscopic diagnostics
1
Nuclear Physics Application Research Devision, Korea Atomic Energy Research Institute, 111, Daedeok-daero 989 beon-gil, 34057, Yuseong-gu, Daejeon, Republic of Korea
2
Laboratoire Kastler Brossel, CNRS, ENS-PSL Research University, Collège de France, Sorbonne Université, 4 Place Jussieu, 75005, Paris, France
Received:
29
March
2024
Accepted:
7
June
2024
Published online:
2
July
2024
Energy levels, transition rates, and electron-impact ionization and excitation cross sections for W I are calculated by multi-configuration Dirac–Fock (MCDF) method using the MDFGME code which aims at improving the accuracies of the atomic data which has been crucial for spectroscopic diagnostics of erosion rate of W in plasma surface interaction. Particular attention has been paid to the core–core (CC) and core–valence (CV) electron correlation effects on the level energies and radiative transition rates. The inclusion of the CC and CV electron correlations significantly improves an agreement with the atomic structure data based on experiments. The electron-impact ionization and excitation cross sections are obtained employing binary-encounter Bethe model and scaled plane wave Born approximation, respectively, from the wave functions by the MCDF calculation The obtained collision cross sections and rate coefficients are compared with other available data, which has been used to determine the erosion rate of W with spectral lines in the range of 400–525 nm.
Duck-Hee Kwon and Paul Indelicato have contributed equally to this work.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
