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The ion- and atom-induced secondary electron emission yield: numerical study for the effect of clean and dirty cathode surfaces
Abstract
The effect of the ion- and atom-induced secondary electron emission yields for both `clean' and `dirty' cathode surfaces is investigated by means of a hybrid model, for typical conditions used in analytical direct current glow discharges (i.e. a pressure of 50-100 Pa, a voltage of 600-1200 V, and an electrical current of 1-10 mA). The hybrid model consists of a number of Monte Carlo models for fast electrons, fast argon ions and atoms in the cathode dark space, and sputtered copper atoms, a fluid model for slow electrons and argon ions, and a heat transfer model to calculate the gas temperature. For clean surfaces, secondary electron emission is almost exclusively attributed to argon ions, at the conditions under study. For dirty surfaces, on the other hand, fast argon ions and atoms contribute each about 50% to secondary electron emission, at the same discharge conditions. A so-called `apparent' secondary electron emission yield (i.e. per bombarding ion) is determined for the range of conditions under study. This value for clean surfaces was found equal to 0.07 for argon on a copper cathode, at all conditions investigated; for dirty surfaces, this value was always higher than 0.07 and it strongly depends on the discharge conditions. With these data, current-voltage-pressure characteristics have been calculated for both clean and dirty surfaces, and compared to experimental data. The absolute current values differ by a factor of 1-1.6 between clean and dirty surfaces. However…
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“Hybrid models 225-234 have therefore emerged in this context, as they represent the best compromise in terms of accuracy and computational cost for modeling the plasma thruster plume expansion and its interaction with the spacecraft.”
From Plasma propulsion modeling with particle-based algorithms (2023) · cites this paper as [231]
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“In fact, they feature a kinetic treatment of the ion species (and in some cases of the neutrals as well) so that CEX collisions are correctly captured, and a fluid modeling of the fastest species, the electrons, which are subject to conservation equations.”
From Plasma propulsion modeling with particle-based algorithms (2023) · cites this paper as [231]
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Research works printed but not linked: 22
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Plasma propulsion modeling with particle-based algorithms
Taccogna, F., Cichocki, F., Eremin, D., Fubiani, G., & Garrigues, L. (2023) · Journal of Applied Physics · doi:10.1063/5.0153862 · Cited by 29
Metadata
- Authors
- Bogaerts, A., & Gijbels, R.
- ORCID
- Bogaerts, Annemie
- Venue
- Plasma Sources Science and Technology
- Publisher
- IOP Publishing
- Published
- 2002-01-09
- Volume
- 11
- Issue
- 1
- Pages
- 27-36
- ISSN
- 0963-0252 (ISSN-L)
- 1361-6595
- OpenAlex
- W2008490556
- Cited by
- 72
- References
- 0
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 3 · 2023: 5 · 2022: 6 · 2021: 2 · 2020: 1 · 2019: 2 · 2018: 4 · 2017: 5 · 2016: 3 · 2015: 6 · 2014: 3 · 2013: 3 · 2012: 5
- FWCI
- 3.50
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Plasma Sources Science and Technology (publishedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Low-Pressure Plasma Processing and Diagnostics
- Physical Sciences › Materials Science › Surfaces, Coatings and Films › Electron and X-Ray Spectroscopy Techniques
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Vacuum and Plasma Arcs
- Keywords
- secondary electron yield, argon ions, argon atoms, copper cathode, DC glow discharge
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- The paper
- Bogaerts, A., & Gijbels, R. (2002). The ion- and atom-induced secondary electron emission yield: numerical study for the effect of clean and dirty cathode surfaces. Plasma Sources Science and Technology. https://doi.org/10.1088/0963-0252/11/1/303
