Magnetic island formation and rotation braking induced by low-Z impurity penetration in an EAST plasma

作     者：Zeng, Shiyong Zhu, Ping Zhou, Ruijie Xu, Ming 

作者机构：Department of Engineering and Applied Physics University of Science and Technology of China Anhui Hefei230026 China International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Hubei Wuhan430074 China Department of Engineering Physics University of Wisconsin-Madison MadisonWI53706 United States Institute of Plasma Physics Chinese Academy of Sciences Anhui Hefei230031 China 

出 版 物：《arXiv》 (arXiv)

年 卷 期：2022年

核心收录：

主　　题：Magnetoplasma 

摘      要：Recent observations of the successive formations of the 4/1, 3/1, and 2/1 magnetic islands as well as the subsequent braking of the 2/1 mode during a low-Z impurity penetration process in EAST experiments are well reproduced in our 3D resistive MHD simulations. The enhanced parallel current perturbation induced by impurity radiation predominately contributes to the tearing mode growth, and the 2/1 island rotation is mainly damped by the impurity accumulation as results of the influence from high n modes. Copyright © 2022, The Authors. All rights reserved.