Particle distribution functions at plasma–surface interface
Open accessAbstract
Particle simulations of bounded plasmas require assumptions on the distribution function of the incoming particles at the plasma–surface interface. Two independent distributions are usually defined, one angular and one energy dependent, disregarding the unified distribution as a whole. In this paper, two types of angular distribution (isotropic and cosine-type) and three types of energy distribution (energy dependent, uniform, and mono-energetic) are compared in a correlated manner via the resulting velocity distribution functions. Examples of incorrectly defined angular distributions are included. Numerical algorithms are indicated for the generation of the discussed distributions. Calculations of the incoming average velocity of the particles, directed perpendicularly to the surface, show the effect of each distribution on subsequent calculations.
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The second approach to electron boundary conditions (selectively reflecting electrons) is capable of reducing downstream boundary effects by reflecting a fraction of outer boundary-crossing electrons, based on their mechanical energy or on the global net current exiting the domain in the last PIC steps.
“The second approach, on the other hand, is capable of reducing downstream boundary effects by reflecting a fraction of outer boundary-crossing electrons, based on their mechanical energy 248 , or on the global net current exiting the domain in the last PIC steps 247 .”
From Plasma propulsion modeling with particle-based algorithms (2023) · cites this paper as [248]
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Plasma propulsion modeling with particle-based algorithms
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Self-citation
- Authors
- Costin, C.
- Affiliations
- Alexandru Ioan Cuza University (RO)
- Corresponding author
- Costin, C.
- ORCID
- Costin, C.
- Venue
- AIP Advances
- Publisher
- AIP Publishing
- Published
- 2020-11-01
- Volume
- 10
- Issue
- 11
- ISSN
- 2158-3226 (ISSN-L)
- OpenAlex
- W3094942119
- Cited by
- 5
- References
- 21
- Citations by year
- 2026: 1 · 2023: 2 · 2021: 2
- FWCI
- 0.34
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- AIP Advances (publishedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Ministry of Education and Research, Romania (1EU-1/2/2016-2022)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Plasma Diagnostics and Applications
- Physical Sciences › Mathematics › Applied Mathematics › Gas Dynamics and Kinetic Theory
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Dust and Plasma Wave Phenomena
- Keywords
- particle distribution function, angular distributions, energy distribution, velocity distribution function, isotropic distribution, bounded plasma
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