https://doi.org/10.1140/epjd/s10053-023-00797-0
Regular Article - Atomic and Molecular Collisions
Electron impact ionization differential cross sections of W+ in the distorted-wave Born approximation
1
Department of Physics, University College of Science, Mohanlal Sukhadia University, 313001, Udaipur, India
2
National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-Cho, 509-5292, Toki, Gifu, Japan
3
Interdisciplinary Graduate School of Engineering and Sciences, Kyushu University, 816-8580, Kasuga, Fukuoka, Japan
a ghanshyam.purohit@mlsu.ac.in, gvpurohit1974@gmail.com
Received:
19
September
2023
Accepted:
27
December
2023
Published online:
3
February
2024
We report electron impact triple-differential cross sections (TDCSs) for the ionization of W+ (6s) and W+ (5d) in the intermediate energy range. The TDCSs are obtained at projectile energies of 100, 200, and 500 eV for ejected electron energies of 2 and 10 eV in the distorted-wave Born approximation approach. Tungsten and related materials are prime candidates for building plasma-facing components in fusion devices, and tungsten and its ions enter the plasma as an impurity. The electron-induced processes from tungsten ions are very important for the diagnostics and modelling of plasma. In the present study, we report the kinematically complete cross section data for the ionization of tungsten ions, which will be helpful for the particular application in fusion plasma. The TDCS trends observed for W+ (6s) and W+ (5d) are analysed in terms of binary and recoil peak positions and magnitude, and a sensitive dependence on values of momentum transfer is observed. It is further observed that the TDCS trends are very different for W+ (5d), which may be due to the open d shell, and thus further investigation is required for a complete understanding of the collision dynamics.
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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.
