2022
DOI: 10.1088/2058-6272/ac500c
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Influence of plasma-induced reflected wave variations on microwave transmission characterization of supersonic plasma excited in shock tube

Abstract: The conventional microwave transmission characterization of shock tube excited supersonic plasma, based on the equivalent complex propagation constant of plasma, is able to measure both electron density and electron neutral collision frequency from the amplitude and phase information of transmitted wave. However, the effects of reflected wave variations induced by plasma are usually neglected during the analysis, which can potentially cause unexpected deviations between the retrieved and actual states of plasm… Show more

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Cited by 1 publication
(1 citation statement)
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“…The microwave interferometry and the transmission methods [20][21][22][23][24] obtain the average electron density on the propagation path and have the advantages of not interfering with the flow field, a wide dynamic range, and a precise time resolution. Among these methods, microwave interferometry measures the phase difference between the signal transmitted through the plasma and the reference signal without plasma.…”
Section: Introductionmentioning
confidence: 99%
“…The microwave interferometry and the transmission methods [20][21][22][23][24] obtain the average electron density on the propagation path and have the advantages of not interfering with the flow field, a wide dynamic range, and a precise time resolution. Among these methods, microwave interferometry measures the phase difference between the signal transmitted through the plasma and the reference signal without plasma.…”
Section: Introductionmentioning
confidence: 99%