FEEDBACK-CONTROL OF DRIFT TURBULENCE

The results of experimental study of drift turbulence in the presence of the controlling wave are presented. The controlling wave with a fre quency in the drift frequency range is driven by an oblique Langmuir w ave, which, in turn, is modulated by a drift plasma wave. This provide s a feedback control of the turbulence. The change in the original dri ft turbulence spectrum and a decrease in the intensity of drift oscill ations are experimentally observed. It is shown that the change in the drift spectrum depends on the phase of the controlling wave. The resu lts confirm the possibility of the control of the spectrum of drift tu rbulence.