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Title: Curling probe measurement of electron density in pulse-modulated plasma

The electron density n{sub e} of stationary plasma can be easily obtained on the basis of the resonance frequency f of a curling probe (CP) measured by a network analyzer (NWA). However, in pulsed plasma with discharge period T, the n{sub e} and f values periodically change with time. This study extends the conventional CP technique to a time-resolved measurement of the pulse-modulated electron density. The condition necessary for the measurement is revealed to be synchronization of NWA with the pulse modulation, which is expressed as (n − 1)T/T{sub SWP} = integer (1, 2, …) for a number n of data point and sweep time T{sub SWP}.
Authors:
; ;  [1] ; ;  [2]
  1. College of Engineering, Chubu University, Kasugai, Aichi 487-8501 (Japan)
  2. GRD Center, DOWA Thermotech Co. Ltd., Nagoya, Aichi 467-0854 (Japan)
Publication Date:
OSTI Identifier:
22275735
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRON DENSITY; PERIODICITY; PLASMA; PULSES; RESONANCE; TIME RESOLUTION