Effects of radial electric field on ion temperature gradient driven mode stability
Plasma Physics
2021-11-24 v1
Abstract
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 of ZFZF.
Cite
@article{arxiv.2103.09487,
title = {Effects of radial electric field on ion temperature gradient driven mode stability},
author = {Ningfei Chen and Hanyuan Hu and Xiangyu Zhang and Shizhao Wei and Zhiyong Qiu},
journal= {arXiv preprint arXiv:2103.09487},
year = {2021}
}
Comments
7 pages, 8 figures