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Fig. 1.
A schematic image of the experimental MAKET facility. 1 – Cathode; 2 – the vacuum chamber (anode); 3 – the magnetic system; 4 – horn antennas; 5, 7 – insulators; 6 – the vacuum-pumping system; AA, BB – sections of diagnostic ports. (The dimensions in the figure are in cm).
Fig. 2.
Geometric parameters of the horn antenna.
Fig. 3.
The arrangement of the horn antennas in the experimental installation. 1 – Receiving and transmitting antenna, 2 – receiving lower antenna, 3 – receiving antenna, 4 – receiving upper antenna.
Fig. 4.
Time evolution of discharge voltage (a), plasma optical emission intensity (b), (c–f) – amplitudes of detected microwave signals received by antennas 3, 1, 2, and 4 (see Fig. 3) respectively.
Fig. 5.
A closer look at the time evolution of discharge voltage.
Fig. 6.
Oscillograms of the amplitude of detected microwave signals received by antennas: 4 (a), 2 (b) (see Fig. 3).
Fig. 7.
Sketch illustrating layers with critical density with azimuthal inhomogeneities α1 – 47°, α2 – 53°, α3 – 53°, α4 – 207°.