In–out impurity density asymmetry due to the Coriolis force in a rotating tokamak plasma

Nuclear Fushion

article

Chengkang Pan¹  Shaojie Wang²  Xiaotao Xiao¹  Lei Ye¹  Yingfeng Xu¹  Zongliang Dai² 

[1] Institute of Plasma Physics, Chinese Academy of Sciences;Department of Engineering and Applied Physics, University of Science and Technology of China

关键词: in–out asymmetry;    Coriolis force;    rotating;   

DOI  :  10.1088/1741-4326/aadaf3

来源: Institute of Physics Publishing Ltd.

【 摘 要 】

The effect of the Coriolis force due to the impurity toroidal and poloidal rotation on the in–out impurity density asymmetry in a rotating tokamak plasma is investigated. The role of the Coriolis force is figured out explicitly in the toroidally rotating plasma frame. The in–out impurity density asymmetry can be induced by the Coriolis force with, in this case, when moving along the magnetic field line from the outboard side to the inboard side in a magnetic flux surface, one sees a positive Coriolis force. The combined effects of the centrifugal force, the Coriolis force, the poloidal electric field and the ion-impurity friction force on the in–out impurity density asymmetry are discussed. The proposed theoretical model can be applied to improve the understanding of the in–out impurity density asymmetry observed in the tokamak experiments.

【 授权许可】

Unknown