Modulated lower hybrid waves, are injected into the Experimental Advanced Superconducting Tokamak (EAST), to investigate the modulated evolutions of pedestal structure and unstable edge-localized modes (ELMs). The spectrum patterns of ##IMG## [http://ej.iop.org/images/0741-3335/62/9/095007/ppcfaba17bieqn1.gif] {${D_\alpha }$} show that the ELM amplitude only slightly decreases while the ELM frequency becomes almost 3–5 times larger as the lower hybrid radio frequency (LHRF) jumps into the lower power level. Pedestal structure analysis indicates that higher LHRF power injection can increase the plasma stored energy and core plasma parameters, accompanying with the pedestal shift and gradient increase. Ion saturation contour current plots suggest that LHRF power can deposit in the plasma edge region to profoundly change the three-dimensional (3D) magnetic topology, similarly to the effect of resonant magnetic perturbations (RMPs), by inducing the helical curre...

中文翻译：

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EAST上的低杂波调制的不稳定ELM演化

将调制的较低混合波注入到实验高级超导托卡马克（EAST）中，以研究基架结构和不稳定的边缘定位模式（ELM）的调制演化。## IMG ## [http://ej.iop.org/images/0741-3335/62/9/095007/ppcfaba17bieqn1.gif] {$ {D_ \ alpha} $}的频谱图显示ELM幅度当较低的混合射频（LHRF）跳入较低的功率水平时，ELM频率几乎变成3至5倍，而只有一点点下降。基座结构分析表明，较高的LHRF功率注入可以增加等离子体存储的能量和核心等离子体参数，并伴随着基座位移和梯度的增加。