Fast measurement of a pulsed plasma using a Fourier cutoff probe

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A new method for time-resolved measurement of pulsed plasmas is suggested for reducing the measurement time. A short impulse has a broadband spectrum, and it can be used to make a spectrum in a short time. The use of a cutoff probe with a Fourier analysis (Fourier Cutoff Probe, FCP) provides the absolute electron densities with high speed. The measurement results from the FCP show good agreement with Langmuir probe's measurement results. However, it took only 1 minute 45 seconds using the FCP to make the temporal profile of electron densities in a pulsed plasma, versus 46 minutes for the Langmuir probe. The FCP's measurement was about 26 times faster than that by the Langmuir probe. This method will provide researchers a faster and convenient diagnostic method for pulsed plasmas.
Publisher
IOP PUBLISHING LTD
Issue Date
2012-04
Language
English
Article Type
Article
Keywords

INDUCTIVELY-COUPLED PLASMA; ELECTRON-ENERGY DISTRIBUTION; LASER THOMSON SCATTERING; DENSITY; DISCHARGES; POWER; DIAGNOSTICS

Citation

JOURNAL OF INSTRUMENTATION, v.7

ISSN
1748-0221
DOI
10.1088/1748-0221/7/04/C04022
URI
http://hdl.handle.net/10203/104489
Appears in Collection
PH-Journal Papers(저널논문)
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