MIXING OF TWO MICROWAVES AND EMISSION OF LOW-FREQUENCY WAVES FROM A PLASMA SLAB.

The generation of vlf waves as a result of nonlinear interaction of two microwaves with a plasma slab in the presence of a high dc field is investigated theoretically. The reflected and transmitted vlf power comes out to be very high compared with the case for high-frequency waves. The generated vlf power is found to be maximum for an optimum value of the nonlinearity parameter, which is a function of carrier mass, collision frequency and mass of the scatterer. The vlf power is also found to show maxima and minima at various slab thicknesses.