Abstract
The excitation of plasma oscillations in a thin-walled annular plasma by an annular electron beam in a cylindrical waveguide is considered in the linear approximation. The instability growth rates and spatial amplification coefficients in the beam-plasma system under the conditions of the Cherenkov and anomalous Doppler resonances are obtained and compared with those in a transversely homogeneous system. The contributions from different instability mechanisms are analyzed.
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Original Russian Text © I.N. Kartashov, M.V. Kuzelev, A.A. Rukhadze, 2009, published in Fizika Plazmy, 2009, Vol. 35, No. 2, pp. 194–201.
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Kartashov, I.N., Kuzelev, M.V. & Rukhadze, A.A. Electromagnetic beam-plasma interactions in a magnetic field. Plasma Phys. Rep. 35, 169–176 (2009). https://doi.org/10.1134/S1063780X09020093
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DOI: https://doi.org/10.1134/S1063780X09020093