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Title: Characterizing low-frequency oscillation of Hall thrusters by dielectric wall temperature variation

The low-frequency oscillation characteristics of a Hall thruster were investigated by varying the dielectric wall temperature. Experimental results indicate that increasing the dielectric wall temperature can result in an increase in the amplitude of low-frequency oscillation and a slight decrease in its frequency. Physical analysis revealed that this change is related to the secondary electron emissions at different dielectric wall temperatures. The evidence suggests that this technique can serve as an effective way for future studies to examine how secondary electron emissions affect a discharging thruster.
Authors:
 [1] ; ;  [2]
  1. Science and Technology on Vacuum and Cryogenics Technology and Physics Laboratory, Lanzhou 730013 (China)
  2. Harbin Institute of Technology, Mail Box 3047, Harbin 150001 (China)
Publication Date:
OSTI Identifier:
22258627
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films; Journal Volume: 32; Journal Issue: 3; Other Information: (c) 2014 American Vacuum Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DIELECTRIC MATERIALS; ELECTRON EMISSION; HIGH ROOMS; OSCILLATIONS; THRUSTERS; VARIATIONS; WALLS