Microwave Method of Tubular Plasma Density Measurement for Relativistic Microwave Oscillator

The method for determining the absolute plasma density in sources that create plasma in the strong magnetic field using the electron beam has been developed and tested. The results of plasma density measurements in the source of tubular plasma used in research on plasma relativistic microwave electr...

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Bibliographic Details
Published in:Plasma physics reports 2024-06, Vol.50 (6), p.684-688
Main Authors: Ponomarev, A. V., Ul’yanov, D. K.
Format: Article
Language:English
Subjects:
Atomic
Density measurement
Electron beams
Error analysis
Magnetic fields
Microwave oscillators
Molecular
Numerical analysis
Optical and Plasma Physics
Physics
Physics and Astronomy
Plasma
Plasma density
Plasma Diagnostics
Relativistic effects
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Summary:The method for determining the absolute plasma density in sources that create plasma in the strong magnetic field using the electron beam has been developed and tested. The results of plasma density measurements in the source of tubular plasma used in research on plasma relativistic microwave electronics are presented. It was shown that at time of switching-on plasma maser, for discharge currents of 5, 9, and 20 A, the plasma densities were (3 ± 0.3) × 10 12 , (5.5 ± 0.6) × 10 12 , and (9.5 ± 1) × 10 12 cm –3 , respectively. Comparison with the probe measurements previously performed, as well as with the numerical calculations made using the KARAT code, showed good agreement between the results of microwave measurements and numerical calculations, while the measurement error did not exceed 15%. The results of probe measurements much stronger deviate from the results of microwave measurements, which is associated with the presence of the strong magnetic field in the plasma source.
ISSN:1063-780X
1562-6938
DOI:10.1134/S1063780X24600737