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Title: Active electron energy distribution function control in direct current discharge using an auxiliary electrode

The electron energy distribution functions are studied in the low voltage dc discharge with a constriction, which is a diaphragm with an opening. The dc discharge glows in helium and is sustained by the electron current emitted from a heated cathode. We performed kinetic simulations of dc discharge characteristics and electron energy distribution functions for different gas pressures (0.8 Torr-4 Torr) and discharge current of 0.1 A. The results of these simulations indicate the ability to control the shape of the electron energy distribution functions by variation of the diaphragm opening radius.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. Institute of Theoretical and Applied Mechanics, Novosibirsk 630090 (Russian Federation)
  2. (United States)
  3. Princeton Plasma Physics Laboratory, Princeton, NJ 08543 (United States)
  4. West Virginia University, Morgantown, WV 26506 (United States)
  5. (Russian Federation)
Publication Date:
OSTI Identifier:
22218484
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 10; Other Information: (c) 2013 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; CATHODES; DIRECT CURRENT; ELECTRIC POTENTIAL; ELECTRONS; ENERGY SPECTRA; GLOW DISCHARGES; HELIUM; MONTE CARLO METHOD; PLASMA; PLASMA SIMULATION