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Title: Flush-mounted probe diagnostics for argon glow discharge plasma

A comparison is made between plasma parameters measured by a flush-mounted probe (FP) and a cylindrical probe (CP) in argon glow discharge plasma. Parameters compared include the space potential, the plasma density, and the effective electron temperature. It is found that the ion density determined by the FP agrees well with the electron density determined by the CP in the quasi-neutral plasma to better than 10%. Moreover, the space potential and effective electron temperature calculated from electron energy distribution function measured by the FP is consistent with that measured by the CP over the operated discharge current and pressure ranges. These results present the FP can be used as a reliable diagnostic tool in the stable laboratory plasma and also be anticipated to be applied in other complicated plasmas, such as tokamaks, the region of boundary-layer, and so on.
Authors:
; ; ; ; ; ; ;  [1] ; ; ; ;  [2]
  1. Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)
  2. Science and Technology on Space Physics Laboratory, Beijing 100076 (China)
Publication Date:
OSTI Identifier:
22314451
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ARGON; BOUNDARY LAYERS; COMPARATIVE EVALUATIONS; CYLINDRICAL CONFIGURATION; ELECTRON DENSITY; ELECTRON TEMPERATURE; ENERGY SPECTRA; GLOW DISCHARGES; ION DENSITY; PLASMA DENSITY; PRESSURE RANGE; PROBES; TOKAMAK DEVICES