Electron Density Measurements in the Magnetically Confined Arc

Three methods were used to obtain electron density as a function of radius in a magnetically confined, low-pressure argon arc. The first utilized the phase shift of a reflected 35-kMc/sec microwave, and the second determined density from the ion saturation current to a Langmuir probe. The third dete...

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Bibliographic Details
Published in:Journal of applied physics 1965-02, Vol.36 (2), p.337-341
Main Authors: McLane, C. K., Takeda, S., Thomas, W. E., Thompson, R. C.
Format: Article
Language:English
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Summary:Three methods were used to obtain electron density as a function of radius in a magnetically confined, low-pressure argon arc. The first utilized the phase shift of a reflected 35-kMc/sec microwave, and the second determined density from the ion saturation current to a Langmuir probe. The third determination utilized the broadening of the H β line emitted by a small quantity of added hydrogen. Agreement among the three methods is satisfactory; the electron density at the axis of this discharge is of order 1014 cm−3, in agreement with results obtained by others for discharges of similar type.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1713990