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Title: Coulomb collision effects on linear Landau damping

Coulomb collisions at rate ν produce slightly probabilistic rather than fully deterministic charged particle trajectories in weakly collisional plasmas. Their diffusive velocity scattering effects on the response to a wave yield an effective collision rate ν{sub eff} ≫ ν and a narrow dissipative boundary layer for particles with velocities near the wave phase velocity. These dissipative effects produce temporal irreversibility for times t ≳ 1/ν{sub eff} during Landau damping of a small amplitude Langmuir wave.
Authors:
 [1]
  1. University of Wisconsin, Madison, Wisconsin 53706-1609 (United States)
Publication Date:
OSTI Identifier:
22252809
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 5; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLITUDES; BOUNDARY LAYERS; CHARGED PARTICLES; COLLISIONAL PLASMA; COLLISIONS; LANDAU DAMPING; PHASE VELOCITY; PROBABILISTIC ESTIMATION; SCATTERING