ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)

For citation:

Novozhilova Y. V., Ryskin N. M., Chumakova M. M. Effect of reflection from remote load on mode competition in gyrotron with quasi­-optical mode convertor. Izvestiya VUZ. Applied Nonlinear Dynamics, 2012, vol. 20, iss. 6, pp. 136-147. DOI: 10.18500/0869-6632-2012-20-6-136-147

This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY 4.0).
Full text PDF(Ru):
(downloads: 150)
Article type: 

Effect of reflection from remote load on mode competition in gyrotron with quasi­-optical mode convertor

Novozhilova Yulija Vladimirovna, Institute of Applied Physics of the Russian Academy of Sciences
Ryskin Nikita Mikhailovich, Saratov Branch of Kotel`nikov Institute of Radiophysics and Electronics of Russian Academy of Sciences
Chumakova Marija Mihajlovna, Saratov State University

In a gyrotron with quasi-optical mode convertor, apart from the fundamental mode, excitation of a mode with opposite azimuthal rotation of the field occurs due to the wave reflected from the remote load. Interaction of the two oppositely rotating modes is investigated by using the quasi-linear equation for slowly varying amplitudes. The developed theory allows explanation of the experimental results where periodic modulation of the transverse structure of gyrotron radiation partially reflected from a remote oscillating membrane was observed.

  1. Antonsen TM, Cai SY, Nusinovich GS. Effect of window reflection on gyrotron operation. Phys. Fluids B. 1992;4(12):4131–4139. DOI: 10.1063/1.860320.
  2. Ginzburg NS, Glyavin MY, Zavol’skii NA et al. A proposal to use reflection with delay for achieving the self-modulation and stochastic regimes in millimeter-wave gyrotrons. Tech. Phys. Lett. 1998;24(6):436–438. DOI: 10.1134/1.1262164.
  3. Dumbrajs O, Glyavin MY, Zapevalov VE, Zavolsky NA. Influence of reflections on mode competition in gyrotrons. IEEE Trans. Plasma Sci. 2000;28(3):588–596. DOI: 10.1109/27.887680.
  4. Batanov GM, Kolik LV, Novozhilova YV et al. Response of a gyrotron to small-amplitude low-frequency-modulated microwaves reflected from a plasma. Tech. Phys. 2001;46(5):595–600. DOI: 10.1134/1.1372953.
  5. Dumbrajs O, Idehara T, Watanabe S et al. Reflections in gyrotrons with axial output. IEEE Trans. Plasma Sci. 2004;32(3):899–902. DOI: 10.1109/TPS.2004.827596.
  6. Dumbrajs O, Nusinovich GS, Piosczyk B. Reflections in gyrotrons with radial output: Consequences for the ITER coaxial gyrotron. Phys. Plasmas. 2004;11(12):5423–5429. DOI: 10.1063/1.1810161.
  7. Dumbrajs O. Influence of possible reflections on the operation of European ITER gyrotrons. Int. J. Infrared Milli. Terahz. Waves. 2010;31(8):892–898. DOI: 10.1007/s10762-010-9653-9.
  8. Kharchev NK, Batanov GM, Bondar YF et al. Gyrotron reaction on small reflection from nonstationary load. Plasma Physics Reports. 2009;(6):158–165 (in Russian).
  9. Kharchev NK, Batanov GM, Bondar YV et al. Gyrotron affected by modulated reflection: new experiments. In: Proc. 8th Int. Workshop «Strong Microwaves and Terahertz Waves: Sources and Applications». IAP RAS, Nizhny Novgorod; 2011. P. 90.
  10. Pishchik LA, Trubetskov DI, Chetverikov AP. Nonstationary processes in resonant relativistic oscillators. In: Lectures on Microwave Electronics and Radiophysics (5th Winter School-Seminar for Engineers). Book. 1. Saratov: Saratov University Publishing; 1981. P. 42 (in Russian).
  11. Nusinovich GS. Mode interaction in gyrodevices. Int. J. Electron. 1981;51(4):457–474. DOI: 10.1080/00207218108901349.
  12. Nusinovich GS. The theory of a multimode gyrotron. In Collection: «Gyrotron». Gorky: IAP AS USSR; 1981. P. 146–168 (in Russian).
  13. Nusinovich GS, Sinitsyn OV, Antonsen TM. Mode switching in a gyrotron with azimuthally corrugated resonator. Phys. Rev. Lett. 2007;98(20):205101. DOI: 10.1103/PhysRevLett.98.205101.
  14. Novozhilova YV, Ryskin NM, Usacheva SA. Nonstationary processes in an oscillator with delayed reflection from the load. Tech. Phys. 2011;56(9):1235. DOI: 10.1134/S1063784211090167.
  15. Usanov DA, Skripal AV, Skripal AV. Semiconductor RF and Optical Autodyne Physics. Saratov: Saratov University Publishing; 2003. 312 p. (in Russian).
  16. Kuznetsov AP, Kuznetsov SP, Ryskin NM. Nonlinear Oscillations. Moscow: Fizmatlit; 2005. 292 p. (in Russian).
  17. Nayfeh AH. Introduction to Perturbation Techniques. Wiley; 1981. 533 p.
  18. Kovalev NF, Novozhilova YV, Petelin MI. Diffusion coupling between a barrel-shaped resonant cavity and a coaxial waveguide. Radiophys. Quantum Electron. 2007;50(10–11):794–802. DOI: 10.1007/s11141-007-0070-4.  
Short text (in English):
(downloads: 124)