Electron-Neutral Collision Cross Sections for H2O: I. Complete and Consistent Set

Maik Budde (Corresponding author), Tiago Cunha Dias, Luca Vialetto, Nuno Rombert Pinhão, Vasco Guerra, Tiago Silva

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)
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This work proposes a complete and consistent set of cross sections (CSs) for electron collisions with water molecules to be published in the IST-Lisbon database on LXCat. The set is validated from the comparison between experimental and computed electron swarm parameters. The former are collected from literature while the latter are calculated using a space-homogeneous two-term Boltzmann solver, assuming isotropic scattering in inelastic collisions. Rotational CSs, based on the Born approximation, are optimised by means of the electron swarm analysis technique. Superelastic rotational and vibrational collisions are accounted for in the calculations and found to be particularly important for low-energy electrons interacting with water molecules. The set can be used with codes assuming space-homogeneous conditions, in particular common two-term Boltzmann solvers, ensuring a good agreement with experiments. Therefore, it constitutes an important tool for fast calculations and modelling of complex plasma chemistries.

Original languageEnglish
Article number445205
Number of pages13
JournalJournal of Physics D: Applied Physics
Issue number44
Early online date30 Aug 2022
Publication statusPublished - 3 Nov 2022


FundersFunder number
European Union's Horizon 2020 - Research and Innovation Framework Programme813393
Deutsche Forschungsgemeinschaft434434223 - SFB 1461
Portuguese Fundação para a Ciência e a TecnologiaPTDC/FIS-PLA/1616/2021, PD/BD/150414/2019, UIDP/50010/2020, EXPL/FIS-PLA/0076/2021, UIDB/50010/2020


    • H O
    • electron swarm technique
    • electron-neutral collision cross section
    • molecular rotation
    • two-term Boltzmann solver


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