Have a personal or library account? Click to login
Using microwave refraction to determine local inhomogeneities of a rotating plasma Cover

Using microwave refraction to determine local inhomogeneities of a rotating plasma

Nukleonika
Volume 68 (2023): Issue 1 (March 2023)
By:
Open Access
|Apr 2023

Figures & Tables

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).
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.
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.
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.
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.
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).
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°.
Sketch illustrating layers with critical density with azimuthal inhomogeneities α1 – 47°, α2 – 53°, α3 – 53°, α4 – 207°.
DOI: https://doi.org/10.2478/nuka-2023-0003 | Journal eISSN: 1508-5791 | Journal ISSN: 0029-5922
Journal RSS Feed
Language: English
Page range: 19 - 24
Submitted on: Aug 22, 2022
Accepted on: Jan 30, 2023
Published on: Apr 3, 2023
Published by: Institute of Nuclear Chemistry and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year
Keywords:
Horn antenna,
Inhomogeneities,
Reflected microwave,
Reflectometry,
Refraction
Related subjects:
Chemistry,
Nuclear chemistry,
Physics,
Astronomy and astrophysics,
Physics, other

© 2023 Yurii P. Martseniuk, Yevhen V. Siusko, Yurii V. Kovtun, published by Institute of Nuclear Chemistry and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Previous articleVolume 68 (2023): Issue 1 (March 2023)Next article