Water you waiting for? - A Complete and Consistent Set of Electron-H<sub>2</sub>O Collision Cross Sections for Plasma Modelling
POSTER
Abstract
Although water is omnipresent in many plasma applications, often it is not taken into account in plasma
modelling, partially due to the lack of reliable and accessible cross sections. Electron-neutral collision cross
sections are optimised by the electron swarm method assuming isotropic inelastic collisions, yielding a complete
cross section set that is consistent with experiments [1] for use in space-homogeneous codes like common
two-term Boltzmann solvers [2]. The set is made available in the IST-Lisbon database on LXCat [3], giving the
community the immediate tools to develop more sophisticated plasma kinetics and chemistry models.
From there, the study is extended to anisotropic rotational collisions [4] and the set is benchmarked for use in
other codes like those considering electron density gradients or Monte Carlo simulations. In conclusion, the set
can be recommended based on a thorough quantitative analysis to improve plasma models and the understanding
of experiments.
References
[1] M. Budde, T. C. Dias, L. Vialetto, N. Pinhão, V. Guerra and T. Silva 2022 J. Phys. D: Appl. Phys. submitted
for publication
[2] A. Tejero-del-Caz, V. Guerra, D. Gonçalves, M. Lino da Silva, L. Marques, N. Pinhão, C. D. Pintassilgo
and L. L. Alves 2019 Plasma Sources Sci. Technol. 28 043001
[3] L. L. Alves 2014 J. Phys.: Conf. Ser. 565 012007
[4] L. Vialetto, A. Ben Moussa, J. van Dijk, S. Longo, P. Diomede, V. Guerra and L. L. Alves 2021 Plasma
Sources Sci. Technol. 30 075001
modelling, partially due to the lack of reliable and accessible cross sections. Electron-neutral collision cross
sections are optimised by the electron swarm method assuming isotropic inelastic collisions, yielding a complete
cross section set that is consistent with experiments [1] for use in space-homogeneous codes like common
two-term Boltzmann solvers [2]. The set is made available in the IST-Lisbon database on LXCat [3], giving the
community the immediate tools to develop more sophisticated plasma kinetics and chemistry models.
From there, the study is extended to anisotropic rotational collisions [4] and the set is benchmarked for use in
other codes like those considering electron density gradients or Monte Carlo simulations. In conclusion, the set
can be recommended based on a thorough quantitative analysis to improve plasma models and the understanding
of experiments.
References
[1] M. Budde, T. C. Dias, L. Vialetto, N. Pinhão, V. Guerra and T. Silva 2022 J. Phys. D: Appl. Phys. submitted
for publication
[2] A. Tejero-del-Caz, V. Guerra, D. Gonçalves, M. Lino da Silva, L. Marques, N. Pinhão, C. D. Pintassilgo
and L. L. Alves 2019 Plasma Sources Sci. Technol. 28 043001
[3] L. L. Alves 2014 J. Phys.: Conf. Ser. 565 012007
[4] L. Vialetto, A. Ben Moussa, J. van Dijk, S. Longo, P. Diomede, V. Guerra and L. L. Alves 2021 Plasma
Sources Sci. Technol. 30 075001
*This work was partially supported by the European Union’s Horizon 2020 research and innovation programmeunder grant agreement MSCA ITN 813393, by Portuguese FCT-Fundac¸ ˜ao para a Ciˆencia e a Tecnologia,under projects UIDB/50010/2020, UIDP/50010/2020 and PTDC/FIS-PLA/1616/2021 (PARADiSE), grantPD/BD/150414/2019 (PD-F APPLAuSE), and EXPL/FIS-PLA/0076/2021.
Publication: M. Budde, T. C. Dias, L. Vialetto, N. Pinhão, V. Guerra and T. Silva 2022 J. Phys. D: Appl. Phys. submitted
for publication
Presenters
-
Maik Budde
- Eindhoven University of Technology, Eindhoven, The Netherlands, and Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal