The Application of the Focussed Fabry-Perot Resonator to Plasma Diagnostics

The use of a focussed Fabry-Perot resonator at microwave frequencies for plasma diagnostics is discussed. It is shown theoretically that improvements in sensitivity in the measurements of the properties of transparent plasmas and dielectrics of two to three orders in magnitude can be expected. Losse...

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Bibliographic Details
Published inIEEE transactions on microwave theory and techniques Vol. 12; no. 1; pp. 33 - 42
Main Authors Primich, R.I., Hayami, R.A.
Format Journal Article
LanguageEnglish
Published IEEE 01.01.1964
Subjects
Dielectric measurements
Fabry-Perot
Microwave frequencies
Optical losses
Optical resonators
Plasma applications
Plasma diagnostics
Plasma measurements
Plasma properties
Refractive index
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Summary:The use of a focussed Fabry-Perot resonator at microwave frequencies for plasma diagnostics is discussed. It is shown theoretically that improvements in sensitivity in the measurements of the properties of transparent plasmas and dielectrics of two to three orders in magnitude can be expected. Losses have been neglected. It is indicated that under certain circumstances, refractive index changes in the gaseous environment may be significant. A method of measuring these changes is included. The extension of these techniques to the optical part of the spectrum is discussed and is shown to be promising. Experimental results, obtained with the use of a cavity at 70 Gc, are presented and appear to confirm the main predicted features.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.1964.1125748