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Generation of a Periodic Sequence of Ultrashort Electromagnetic Pulses in a Scheme with Two Parallel Radiating and Absorbing Electron Beams

Abstract

We demonstrate the possibility of generating a periodic sequence of ultrashort electromagnetic microwave pulses in a scheme with two parallel coaxial electron beams formed by a common cathode and transported via common vacuum channel. The external cylindrical tubular beam ensures the amplification of radiation during rectilinear propagation along periodic slow-wave system, while the internal (paraxial) beam accounts for the nonlinear cyclotron-resonance absorption.

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Funding

This work was performed in the framework of the Russian  Foundation for Basic Research Program (project no. 20-08-00308А) and also supported in part by a Program of State Assignments (project no. 0035-2019-0001).

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Correspondence to N. S. Ginzburg.

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The authors declare that they have no conflict of interest.

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Translated by P. Pozdeev

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Ginzburg, N.S., Vilkov, M.N., Danilov, Y.Y. et al. Generation of a Periodic Sequence of Ultrashort Electromagnetic Pulses in a Scheme with Two Parallel Radiating and Absorbing Electron Beams. Tech. Phys. Lett. 47, 184–188 (2021). https://doi.org/10.1134/S106378502102022X

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Keywords:

  • generation of ultrashort pulses
  • saturable cyclotron-resonance absorber
  • multibeam generators.