EXCITATION OF FAST LANGMUIR WAVE AND STRONG LANGMUIR TURBULENCE BY 2 MICROWAVES - THEORY AND FIRST EXPERIMENTAL RESULTS

The physical processes that determine limiting parameters of a fast La ngmuir wave (FLW) excited by beatings of two electromagnetic waves in plasma are discussed. The typical situation under the conditions of th e microwave experiment, when the striction nonlinearity is predominant , is considered. The plasma transition into the strong turbulence stat e due to the FLW excitation is demonstrated. The dependence of both FL W and strong Langmuir turbulence parameters on a pumping amplitude is obtained. The estimations of microwave experiment are produced. The fi rst experimental results of the FLW excitation by two microwaves are p resented.