Effects of radial electric field on ion temperature gradient driven mode stability

Effects of radial electric field on ion temperature gradient driven mode stability
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径向电场对离子温度梯度驱动模式稳定性的影响

DOI:
10.1063/5.0020749
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发表时间:
2021-03
期刊:
影响因子:
2.2
通讯作者:
Qiu Zhiyong
Qiu Zhiyong
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Chen Ningfei;Hu Hanyuan;Zhang Xiangyu;Wei Shizhao;Qiu Zhiyong

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The local stability of ion-temperature gradient driven mode (ITG) in the presence of a given radial electric field is investigated using gyrokinetic theory and ballooning mode formalism with toroidal effect accounted for. It is found that zero frequency radial electric field-induced poloidal rotation can significantly stabilize ITG, while the associated density perturbation has little effect on ITG stability due to the modification of finite-orbit-width effect. However, the parallel mode structure is slightly affected due to the evenly symmetric density modulation associated with the zero-frequency radial electric field.
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