TITLE

Plasma density measurements by phase resolved cutoff

AUTHOR(S)
Kwon, J. H.; You, S. J.; Kim, J. H.; Shin, Y. H.
PUB. DATE
February 2010
SOURCE
Applied Physics Letters;Feb2010, Vol. 96 Issue 8, p081502
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A method for precise measurement of absolute electron density in the plasma using plasma frequency is proposed. The phase difference between two antennas (radiating and detecting antennas) and its slow time modulation was used, instead of the transmittance used in previous cutoff probe, and a remarkable result is observed. This method can determine the absolute electron density precisely: It is not only in a good agreement with the previous method very closely but also is able to find the cutoff point clearly even in difficult conditions where there are ambiguities to determine the cutoff point with previous method.
ACCESSION #
48352118

 

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