journal article·2020-11-01Open access

Particle distribution functions at plasma–surface interface

C. Costin

AIP Advances· Volume 10· Issue 11

Abstract

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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Research context

OpenAlex topics: Laser-induced spectroscopy and plasma · Dust and Plasma Wave Phenomena · Plasma Diagnostics and Applications

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Affiliations

Iasi Plasma Advanced Research Center (IPARC), Faculty of Physics, Alexandru Ioan Cuza University of Iasi , Iasi 700506, Romania

Funding

Ministry of Education and Research, Romania

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