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Measurement of the radio frequency admittance of a plane grid capacitor in a plasma

Published online by Cambridge University Press:  13 March 2009

I. L. Freeston
I. L. Freeston
Affiliation:
Radio and Space Research Station, Slough, Bucks†
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Abstract

The admittance of a plane grid capacitor immersed in an ion beam plasma has been measured, and the results are in general agreement with the kinetic theory of the admittance (Buckley 1968). With a steady bias potential applied to the grids, the results showed a deviation from the theoretical behaviour that is attributable to plasma depletion by the grids. The effect of varying the background pressure showed that electron-neutral collisions had a negligible effect on the measured admittance. A significant change in the admittance was found for a measuring voltage applied to the grids of the order of the electron temperature.

Type
Research Article
Information
Journal of Plasma Physics , Volume 2 , Issue 3 , August 1968 , pp. 329 - 337
Copyright
Copyright © Cambridge University Press 1968

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References

REFERENCES

Buckley, R. 1968 J. Plasma Phys. 2, 339.CrossRefGoogle Scholar
Freeston, I. L. & Zavody, A. M. 1967 A collisionless ion beam plasma. Proceedings of the Eighth International Conference on Phenomena in lonised Gases, Vienna, p. 541.Google Scholar
Heikkila, W. J., Fejer, J. A., Hugill, J. & Calvert, W. 1966 Comparison of ionospheric probe techniques. Space Research, vol. VII, p. 395. Amsterdam: North-Holland Publishing Co.Google Scholar