Journal of Radio Electronics. eISSN 1684-1719. 2025. ¹11
Full text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2025.11.11
17th International Conference
Gas Discharge Plasmas and Their Applications
Ekaterinburg, Russia, 8-12 September 2025
VARIATION OF THE TRANSIENT PROCESS OF RELATIVISTIC
Ka-BAND BWO IN THE NON-STATIONARY GENERATION MODE
M.I. Yalandin1,2, V.V. Rostov3
1Institute of Electrophysics, UB RAS
620016, Russia, Yekaterinburg, Amundsen str., 1062P.N. Lebedev Physical Institute, RAS
119991, Russia, Moscow, Leninskii Ave., 533Institute of High Current Electronics, SB RAS
634055, Russia, Tomsk, Akademicheskii Ave., 2/3
The paper was received October 2, 2025.
Abstract. A brief review of studies and new results on variation of the transient process duration of a non-stationary relativistic Ka-band backward-wave oscillator are presented. The variation is realized by changing the electron current, the beam coupling with the synchronous harmonic of the excited wave TM01, or a seed signal intensity determined by steepness of the beam front. In the first two cases, not only the leading radiation peak shifts, but also its power changes significantly, and in the second case, the carrier frequency also varies. The approaches noted were demonstrated experimentally or in modeling using particle-in-cell method. A numerical experiment showed that, with a constant current front steepness, the transient process duration can be controlled by variation the transverse velocities of the electrons of the magnetized beam, at which the amplitude and time of occurrence of the seed signal change, but the microwave power remains constant.
Key words: coaxial diode, high-current beam, backward-wave jscillator, magnetic field, transverse velocities, transient process.
Financing: The research was funded by the Russian Science Foundation (project No. 24-19-00407, https://rscf.ru/project/24-19-00407/).
Corresponding author: Yalandin Mikhail Ivanovich, yalandin@iep.uran.ru
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For citation:
Yalandin M.I., Rostov V.V. Variation of the transient process of relativistic Ka-band BWO in the non-stationary generation mode. // Journal of Radio Electronics. – 2025. – ¹. 11. https://doi.org/10.30898/1684-1719.2025.11.11 (In Russian)