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A sensitive microwave interferometer for plasma diagnostics

Published online by Cambridge University Press:  13 March 2009

J. R. Wallington
Affiliation:
Department of Electronics, The University, Southampton
J. D. E. Beynon
Affiliation:
Department of Electronics, The University, Southampton

Abstract

More accurate methods of measuring microwave attenuation and phase are constantly being sought, particularly for such applications as plasma diagnostics. The microwave bridge technique described here was developed for the study of a quiescent plasma having an electron density of 1015 to 1018 m−3 corresponding to a plasma frequency of 3 × 108 to 1010 Hz, and an electron collision frequency of 1010 to 1011 s−1. The plasma had a broad dimension of 0·3 m. For such a plasma a probing frequency of 10 GHz was considered to be the most suitable; at this frequency the attenuation α and phase shift δβ expected were 0·1 < α< 50 dB and 1° < δβ < 1000° respectively.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1969

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References

REFERENCES

Dyson, J. D. 1966 Trans. IEEE, vol. MTT-14, p. 410.Google Scholar
Wharton, C. B. 1961 U.S. Patent 2971153.Google Scholar
Lisitano, G. 1959 Proc. Fourth Int. Conference on Phenomena in Ionized Gases,Munich.Google Scholar
Yahagi, E. 1965 Proc. Seventh Int. Conference on Phenomena in Ionized Gases,Belgrade.Google Scholar
Anon, 1967 Microwaves 6, no. 9, p. 106.CrossRefGoogle Scholar