Abstract
The instability of an electron beam in cold plasma is considered in the linear potential approximation with different velocity-distribution functions of beam electrons. It is demonstrated that the mechanism of beam instability in plasma changes as the electron-velocity spread is increased: the hydrodynamic single-particle instability mode evolves into the hydrodynamic collective mode or the single-particle kinetic one. Instability growth rates in different modes are determined analytically and numerically.
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Original Russian Text © I.N. Kartashov, M.V. Kuzelev, 2016, published in Vestnik Moskovskogo Universiteta, Seriya 3: Fizika, Astronomiya, 2016, No. 5, pp. 46–54.
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Kartashov, I.N., Kuzelev, M.V. On the influence of the electron-velocity spread in a beam on the mechanism of Cherenkov beam–plasma interaction. Moscow Univ. Phys. 71, 537–544 (2016). https://doi.org/10.3103/S0027134916050106
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DOI: https://doi.org/10.3103/S0027134916050106