Microwave measurement of electron density in a plasma column contained in a dielectric tube

Hooper, G

doi:10.1088/0022-3727/5/6/101

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…In the case of the TEoii mode, the unwanted mode most likely to occur is the TM111, which gives the same resonant frequency in the absence of a plasma for a given set of cavity dimensions. The unwanted TMiii mode, however, has been shown by Hooper (1972) to have a far greater sensitivity than the TEOII mode. The T M l l l mode requires wall currents between the side-and end-walls.…”

Section: The Teoll Mode Cavitymentioning

confidence: 99%

Microwave cavity measurements of electron densities in a shock tube

Hooper¹

1973

J. Phys. D: Appl. Phys.

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The use of the microwave cavity in the study of ionization in shock waves in reactive gas mixtures is discussed. Some of the factors affecting the performance of a TE011 mode cavity are considered, and it is noted that the presence of end-holes in the cavity and a containing tube for the plasma both lead to a considerable enhancement of the cavity sensitivity. In the light of this, some results for the recombination rate constant of the oxyacetylene reaction diluted in argon obtained in a previous study are reanalysed and found to be in reasonable accord with those of other workers, obtained with a microwave interferometer.

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Section: The Teoll Mode Cavitymentioning

confidence: 99%

Microwave cavity measurements of electron densities in a shock tube

Hooper¹

1973

J. Phys. D: Appl. Phys.

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Formation de polymères dans une décharge radio fréquence: influence de la densité électronique

Vuillermoz¹

1975

Thin Solid Films

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Plasma density measurement in an imperfect microwave cavity

Souw

1987

Journal of Applied Physics

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The density of a plasma generated in a TM olO /2.45 GHz microwave cavity has been measured from the shift of the TM llO mode excited at a higher frequency. Since the design was aimed at obtaining optimum power coupling, the cavity has several openings and is imperfect from the viewpoint of the density measurement. A technique based on the dipole resonance behavior of cavity modes with nonzero axial mode number has been utilized to calibrate the observed TM IlO mode frequency shift, which is found to differ considerably from the ideal cavity formula. A new theoretical formula which accounts for the particular form of cavity imperfection used in the experiment. has been derived and verified. It is also shown that the cavity shift method is conveniently applicable to pulsed microwave discharges.

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Microwave measurement of electron density in a plasma column contained in a dielectric tube

Cited by 3 publications

References 7 publications

Microwave cavity measurements of electron densities in a shock tube

Microwave cavity measurements of electron densities in a shock tube

Formation de polymères dans une décharge radio fréquence: influence de la densité électronique

Plasma density measurement in an imperfect microwave cavity

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