Abstract
The linear theory of the two-beam instability of weak gyrating beams is investigated. Maximum growth rates of instabilities, instability limits and frequencies of unstable waves are numerically determined. The aperiodic instability withk zν z0=ω c(ν z0 is the velocity of the beam along the magnetic field,ω c is the cyclotron frequency andk z is the longitudinal wave number) and the instability withω=ω c/2 and withk zν z0=ν c/2 possess greatest growth rates. Dependence of growth rates on longitudinal and transversal components of the wave vector is investigated in detail.
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Kopecký, V., Preinhaelter, J. Instability of two counter-streaming gyrating beams of electrons. Czech J Phys 22, 58–66 (1972). https://doi.org/10.1007/BF01690946
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DOI: https://doi.org/10.1007/BF01690946