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A microwave interferometer with increased stability for diagnostics of steady-state plasma

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Abstract

The schematic and results of studying an interferometer for a wavelength of 8 mm with homodyne frequency conversion for measuring the electron density of a steady-state plasma are described. The design of its waveguide system allows the drift of the indicated initial phase to be reduced to a level of ±0.1°/h. The maximum phase shift measured is 360°, the tolerable signal-power decay in plasma is 16 dB, and the maximum phase measurement error is ∼5%.

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Authors and Affiliations

  1. Institute of Applied Physics, National Academy of Sciences of Ukraine, ul. Petropavlovskaya 58, Sumy, 40038, Ukraine

    D. A. Nagornyi & A. G. Nagornyi

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  1. D. A. Nagornyi
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  2. A. G. Nagornyi
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Original Russian Text © D.A. Nagornyi, A.G. Nagornyi, C.C. Sidorov, 2006, published in Pribory i Tekhnika Eksperimenta, 2006, No. 6, pp. 96–99.

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Nagornyi, D.A., Nagornyi, A.G. A microwave interferometer with increased stability for diagnostics of steady-state plasma. Instrum Exp Tech 49, 831–833 (2006). https://doi.org/10.1134/S002044120606011X

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  • DOI: https://doi.org/10.1134/S002044120606011X

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