【摘要】 木文研究了托卡马克中隔板附近的密度陡变对低杂波波导发射和耦会的影响,发现在密度快变区存在大的波反射,严重影响了波导的耦合效率,反射的波在密度快变区和真空壁之间造成驻波场,改变了功率和能流的谱分布,使它们对等离子体边界性质变得十分敏感,此外,密度的快变还可能放宽可近性条件。更多还原

【Abstract】 The influence of the abrupt density change near the limiter radius in Tokamak on the coupling of lower hybrid wave with grill is considered. It is discovered that the serious wave reflection, which exists in the region of the abrupt density change, would reduce the coupling efficiency of the grill. A standing wave is formed between the region of the abrupt density change and vacuum chamber wall by the reflected wave. The power and the energy flux spectra would be changed and more sensitive to the plasma boundary condition. In addition, the accessibility criterion of LH wave would be loosened.更多还原