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Title: Kinetic theory of the filamentation instability in a collisional current-driven plasma with nonextensive distribution

The evolution of filamentation instability in a weakly ionized current-carrying plasma with nonextensive distribution was studied in the diffusion frequency region, taking into account the effects of electron-neutral collisions. Using the kinetic theory, Lorentz transformation formulas, and Bhatnagar-Gross-Krook collision model, the generalized dielectric permittivity functions of this plasma system were achieved. By obtaining the dispersion relation of low-frequency waves, the possibility of filamentation instability and its growth rate were investigated. It was shown that collisions can increase the maximum growth rate of instability. The analysis of temporal evolution of filamentation instability revealed that the growth rate of instability increased by increasing the q-parameter and electron drift velocity. Finally, the results of Maxwellian and q-nonextensive velocity distributions were compared and discussed.
Authors:
;  [1] ;  [2]
  1. Physics Department, University of Birjand, Birjand 97179-63384 (Iran, Islamic Republic of)
  2. Laser and Plasma Research Institute, Shahid Beheshti University, G.C., Tehran 19839-63113 (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22490958
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 7; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COLLISIONS; DIELECTRIC MATERIALS; DIFFUSION; DISPERSION RELATIONS; ELECTRON DRIFT; ELECTRONS; LORENTZ TRANSFORMATIONS; NEUTRAL PARTICLES; PERMITTIVITY; PLASMA; PLASMA INSTABILITY; VELOCITY