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Title: First principles calculation of the effect of Coulomb collisions in partially ionized gases

Coulomb collisions, at appreciable ratios (η) of the electron to the neutral particle density, influence significantly the electron kinetics in particle swarms and in plasmas of gas discharges. This paper introduces a combination of Molecular Dynamics and Monte Carlo simulation techniques, to provide a novel, approximation-free, first principles calculation method for the velocity distribution function of electrons, and related swarm characteristics, at arbitrary η. Simulation results are presented for electrons in argon gas, for density ratios between zero and 10{sup −1}, representing the limits of a negligible electron density and an almost complete Maxwellization of the velocity distribution function, respectively.
Authors:
 [1]
  1. Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, P.O. Box No. 49, H-1525 Budapest (Hungary)
Publication Date:
OSTI Identifier:
22253122
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ARGON; COLLISIONS; COMPUTERIZED SIMULATION; DISTRIBUTION FUNCTIONS; ELECTRON DENSITY; ELECTRONS; MOLECULAR DYNAMICS METHOD; MONTE CARLO METHOD; NEUTRAL PARTICLES; PLASMA; VELOCITY