Generation of alfvén and magnetosonic waves due to HF and parametric instabilities in an ionized gas flow in a plane waveguide

We report on the analysis of the up-conversion and parametric instability of Alfvén and magnetosonic waves in a flow of completely ionized gas propagating in a plane waveguide. A nonlinear boundary-value problem has been solved and equations for slowly varying complex amplitudes of modes have been derived. The high efficiency of the energy up-conversion due to gas flow energy is shown. State Technical University, Nizhny Novgorod, Russia. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 40, No. 7, pp. 845–850, July, 1997.