Resonant Parametric Excitation in Lower-hybrid Heating of Tokamak Plasma*
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On Novel Mechanism of a Pump Electromagnetic Wave Absolute Two- Plasmon Parametric Decay Instability Excitation in Tokamak ECRH Experiments
Novel mechanism leading to excitation of absolute two – upper hybrid – plasmon parametric decay instability (TPDI) of a pump extraordinary (X) wave is discussed. It is shown that the upper hybrid (UH) plasmon can be 3D trapped in the presence of both a non-monotonous density profile and a finite-size pump beam in a plane perpendicular to the plasma inhomogeneity direction. This leads to excitat...
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تاریخ انتشار 2014