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Surface waves on the boundary of a conducting medium and their excitation by a relativistic electron beam

  • Oscillations and Waves in Plasma
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Abstract

Excitation of surface waves by a relativistic electron beam propagating over a conducting cylindrical medium (metal or highly ionized plasma) is investigated theoretically. Dispersion relations describing the linear interaction of surface electromagnetic waves with a monoenergetic electron beam are derived, and the growth rates and spatial amplification factors of excited waves are determined. Condition for the nonlinear trapping of the beam electrons by a surface wave is used to determine the maximum amplitude of the excited wave and the optimal radiator length. The electric field of a surface wave excited by an electron beam is estimated for a particular case.

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Authors and Affiliations

  1. Nizhny Novgorod State Technical University, Nizhny Novgorod, 603950, Russia

    A. V. Kukushkin

  2. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, 119991, Russia

    A. A. Rukhadze

  3. Moscow Institute of Physics and Technology, Dolgoprudnyi, Moscow oblast, 141700, Russia

    A. A. Rukhadze

Authors
  1. A. V. Kukushkin
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  2. A. A. Rukhadze
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Correspondence to A. V. Kukushkin.

Additional information

Original Russian Text © A.V. Kukushkin, A.A. Rukhadze, 2017, published in Fizika Plazmy, 2017, Vol. 43, No. 9, pp. 776–781.

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Kukushkin, A.V., Rukhadze, A.A. Surface waves on the boundary of a conducting medium and their excitation by a relativistic electron beam. Plasma Phys. Rep. 43, 937–942 (2017). https://doi.org/10.1134/S1063780X17090045

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  • DOI: https://doi.org/10.1134/S1063780X17090045

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