摘要
The kinetic effects of thermal particles and fast ions on internal kink(IK)mode are numerically investigated by the MHD-kinetic hybrid code MARS-K.It is shown that either thermal particles or fast ions have stabilizing influence on IK.However,the former can not fully stabilize IK,and the later can suppress the IK.In addition,the synergistic effect from thermal particles and fast ions induces more stronger damping on IK.The kinetic effects from particles significantly raise the critical value of poloidal beta(βpcrit)for driving IK in the toroidal plasma.This implies a method of controlling IK or sawtooth in the high-βp discharge scenario of tokamak.It is noted that,at the q=1 rational surface,mode structure becomes more sharp due to the self-consistent modification by particles’kinetic effect.
作者
苗雨田
郝广周
刘悦
何宏达
陈伟
王雍钦
王爱科
许敏
Yutian Miao;G.Z.Hao;Yue Liu;H.D.He;W.Chen;Y.Q.Wang;A.K.Wang;M.Xu(Key Laboratory of Materials Modification by Laser,Ion,and Electron Beams(Ministry of Education),School of Physics,Dalian University of Technology,Dalian 116024,China;Southwestern Institute of Physics,Chengdu 610041,China)
基金
the National Key R&D Program of China(Grant No.2019YFE03050003)
the National Magnetic Confinement Fusion Science Program(Grant No.2018YFE0304103)
the National Natural Science Foundation of China(Grant Nos.11775067 and11905067)。
