Jpn. J. Appl. Phys. 5 (1966) pp. 957-961  |Next Article|  |Table of Contents|
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Characteristic of a Cylindrical Probe in a Low Density Plasma Stream

Hiroshi Amemiya and Toshihiko Dote

(Received July 6, 1966)

The positive ion current characteristic of a cylindrical probe in a drifting plasma is presented under the condition that the gas density is so low that the free molecular theory applies and that there is a clear boundary between the plasma and the sheath, the latter form being assumed to be a cylinder coaxial with the probe. For the estimation of the sheath thickness the equation of space-charge-limited currents is applied. The ratio between the ion currents when the axis of the probe is parallel and perpendicular to the direction of the flow is shown to provide a determination of the speed ratio.

URL: http://jjap.jsap.jp/link?JJAP/5/957/
DOI: 10.1143/JJAP.5.957

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