Cited by 134Plasma Diagnostics and ApplicationsVacuum and Plasma ArcsMagnetic confinement fusion research

Kinetic effects in a Hall thruster discharge

Kaganovich, I. D., Raitses, Y., Sydorenko, D., Smolyakov, A.·2007·Physics of Plasmas

Abstract

Recent analytical studies and particle-in-cell simulations suggested that the electron velocity distribution function in E×B discharge of annular geometry Hall thrusters is non-Maxwellian and anisotropic. The average kinetic energy of electron motion in the direction parallel to the thruster channel walls (across the magnetic field) is several times larger than that in the direction normal to the walls. Electrons are stratified into several groups depending on their origin (e.g., plasma or channel walls) and confinement (e.g., lost on the walls or trapped in the plasma). Practical analytical formulas are derived for the plasma flux to the wall, secondary electron fluxes, plasma potential, and electron cross-field conductivity. Calculations based on these formulas fairly agree with the results of numerical simulations. The self-consistent analysis demonstrates that the elastic electron scattering in collisions with atoms and ions plays a key role in formation of the electron velocity distribution function and the plasma potential with respect to the walls. It is shown that the secondary electron emission from the walls may significantly enhance the electron conductivity across the magnetic field but only weakly affects the insulating properties of the near-wall sheath. Such self-consistent decoupling between the secondary electron emission effects on the electron energy losses and the electron cross-field transport is currently not captured by the existing fluid and hybrid mod…

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Crossref · 10.1063/1.2709865

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  • Hybrid models represent the best compromise in terms of accuracy and computational cost for modeling plasma thruster plume expansion and its interaction with the spacecraft.

    “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 [230]

  • Hybrid models 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.

    “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 [230]

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Authors
Kaganovich, I. D., Raitses, Y., Sydorenko, D., & Smolyakov, A.
Affiliations
  • Princeton University (US)
  • University of Saskatchewan (CA)
Venue
Physics of Plasmas
Published
2007-05-01
Volume
14
Issue
5
ISSN
  • 1070-664X (ISSN-L)
  • 1089-7674
OpenAlex
W1965192368
Cited by
134
References
26
Citations by year
2026: 2 · 2025: 6 · 2024: 6 · 2023: 6 · 2022: 10 · 2021: 8 · 2020: 5 · 2019: 17 · 2018: 9 · 2017: 12 · 2016: 5 · 2015: 2 · 2014: 6 · 2013: 4 · 2012: 7
FWCI
8.20
Type
journal article
Language
en
Open access
closed
Locations
Physics of Plasmas (publishedVersion)
Funders
  • Office of Science
  • Fusion Energy Sciences
  • Air Force Office of Scientific Research
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Plasma Diagnostics and Applications
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Vacuum and Plasma Arcs
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Magnetic confinement fusion research
Keywords
Hall thruster, electron velocity distribution, non-Maxwellian distribution, secondary electron emission, plasma-wall interaction, plasma electric potential, electron scattering, electron energy loss

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