Mode selection in an S-band relativistic backward wave oscillator based on a coaxial waveguide View Full Text


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Article Info

DATE

2014-02

AUTHORS

E. M. Totmeninov, A. I. Klimov, V. Yu. Konev, I. V. Pegel, V. V. Rostov, R. V. Tsygankov, V. P. Tarakanov

ABSTRACT

The competition of oscillations in a relativistic backward wave oscillator (RBWO) based on a coaxial waveguide has been studied by theoretical and experimental methods. It is established that the starting current for asymmetric magnetic TEm1 type waves is lower than that for the TEM wave. Predominant excitation of the former waves is confirmed by numerical simulations using the PIC-code KARAT. In an experimental RBWO prototype, the excitation of asymmetric oscillations was suppressed by longitudinal cuts in the central conductor of the coaxial waveguide. As a result, stable generation of the TEM wave has been achieved at a frequency of 1.23 GHz, a peak power of 260 MW, and a 28% efficiency of electron-beam-power conversion into radiation power for a microwave-pulse duration of 33 ns. More... »

PAGES

152-156

References to SciGraph publications

  • 1978-07. Theory of transients in relativistic backward-wave tubes in RADIOPHYSICS AND QUANTUM ELECTRONICS
  • 1999-12. Relativistic backward wave oscillator with a discrete resonance reflector in RADIOPHYSICS AND QUANTUM ELECTRONICS
  • 2011-12-09. Powerful Cherenkov oscillators with 2D distributed feedback in TECHNICAL PHYSICS
  • Identifiers

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    http://scigraph.springernature.com/pub.10.1134/s1063785014020278

    DOI

    http://dx.doi.org/10.1134/s1063785014020278

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    https://app.dimensions.ai/details/publication/pub.1019477932


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