Low-threshold parametric excitation of electron plasma waves localized in the edge transport barrier of a tokamak during electron cyclotron resonance heating of a plasma

The possibility of the localization of longitudinal waves in the intermediate frequency range in the edge transport barrier of a toroidal nuclear fusion facility is discovered. It is shown that such localized waves can be excited at the parametric decay of sub-megawatt ordinary microwave beams in experiments on electron cyclotron resonance heating of a plasma, which leads to the generation of anomalously scattered waves.