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Title: Note: On the measurement of plasma potential fluctuations using emissive probes

In this Note, it is pointed out that emissive probes cannot be used to directly and reliably measure plasma potential fluctuations. An experimentally validated model demonstrates indeed that the floating potential fluctuations of an emissive probe which floats at the mean plasma potential depend not only on the plasma potential fluctuations but also on electron density and temperature fluctuations.
Authors:
; ; ; ;  [1]
  1. IJL, Université de Lorraine, CNRS (UMR 7198), 54506 Vandoeuvre (France)
Publication Date:
OSTI Identifier:
22254876
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 5; 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; ELECTRON PROBES; FLUCTUATIONS; PLASMA DIAGNOSTICS; PLASMA POTENTIAL