Nonlinear theory of excitation of a monochromatic electron cyclotron wave in plasma

Using a partial numerical simulation, the nonlinear stage of electron cyclotron instability was considered in a single-mode regime. It is shown that the trapping of resonance ions may lead to the stabilization of the kinetic instability. The maximum amplitude of the field is determined for such a mechanism of stabilization, and the condition of the latter applicability is found. (MOW)