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Title: An axially propagating two-stream instability in the Hall thruster plasma

Collective Thomson scattering experiments reveal the presence of high-frequency, axial electron density fluctuations at millimetric wavelengths in the Hall thruster plasma. The properties of these fluctuations are investigated experimentally and via linear kinetic theory. The relative drift of electrons and ions in the axial direction is found to be insufficient to cause excitation of the observed mode. Instead, the mode is determined to be a two-stream instability arising due to the velocity difference between singly and doubly charged ion populations in the plume.
Authors:
 [1] ;  [2] ;  [3] ; ;  [4] ; ;  [5]
  1. ICARE, CNRS (UPR 3021), 1C ave. de la Recherche Scientifique, 45071 Orléans (France)
  2. Institute of Plasma Physics ASCR, Prague (Czech Republic)
  3. CPHT, CNRS (UMR 7644), Ecole Polytechnique, Route de Saclay, 91128 Palaiseau (France)
  4. LPP, CNRS (UMR 7648), Ecole Polytechnique-Univ. Paris-Sud-UPMC Univ. Paris 06, Route de Saclay, 91128 Palaiseau (France)
  5. IJL, CNRS (UMR 7198), Université de Lorraine, BP 70239, 54506 Vandoeuvre-lès-Nancy (France)
Publication Date:
OSTI Identifier:
22299808
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 7; Other Information: (c) 2014 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; ELECTRON DENSITY; EXCITATION; FLUCTUATIONS; IONS; PLASMA; PLUMES; THOMSON SCATTERING; THRUSTERS; TWO-STREAM INSTABILITY; WAVELENGTHS