https://doi.org/10.1140/epjd/s10053-021-00204-6
Regular Article - Atomic and Molecular Collisions
Electron impact single ionization cross sections of 
1
Department of Physics, University College of Science, Mohan Lal 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
Department of Fusion Science, SOKENDAI, 322-6 Oroshi-cho, 509-5292, Toki, Gifu, Japan
4
Interdisciplinary Graduate School of Engineering nd Sciences, Kuyushu University, 816-8580, Kasuga, Fukuoka, Japan
5
Department of Physics, H. N. B. Garhwal University, B.G.R. Campus, Pauri, Uttarakhand, India
a ghanshyam.purohit@mlsu.ac.in, gvpurohit1974@gmail.com
Received:
28
February
2021
Accepted:
15
June
2021
Published online:
5
August
2021
Tungsten is suitable for wall material as well as divertor material in magnetic fusion devices due to its low sputtering and good thermal properties. The electron impact ionization process in the low charged states of W is important for modeling of the divertors. We present results of our calculation for the electron induced total ionization cross sections of 
. The direct ionization cross sections have been calculated in variants of the binary encounter Bethe methods as well as variants of the distorted wave approximation. The individual cross sections for the direct ionization of some outer subshells of are also reported, and it is observed that the major contribution to the total cross section comes from the 5d, 6s and 4f subshells. Present cross section results have been compared with the available measurements and theoretical results.
Key words: Total cross section / DWA / Fusion plasma / Differential cross sections / BEB
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2021
