典型文献
Interaction between energetic-ions and internal kink modes in a weak shear tokamak plasma
文献摘要：
Based on the conventional tokamak HL-2A-like parameters and profiles,the linear properties and the nonlinear dynamics of non-resonant kink mode(NRK)and non-resonant fishbone instability(NRFB)in reversed shear tokamak plasmas are investigated by using the global hybrid kinetic-magnetohydrodynamic nonlinear code M3D-K.This work mainly focuses on the effect of passing energetic-ions on the NRK and NRFB instabilities,which is different from the previous works.It is demonstrated that the NRFB can be destabilized by the passing energetic-ions when the energetic-ion beta βh exceeds a critical value.The transition from NRK to NRFB occurs when the energetic-ion beta βh increases to above a critical value.The resonance condition responsible for the excitation of NRFB is interestingly found to be satisfied at ωt+ωp ≈ ω,where ωt is the toroidal motion frequency,ωp is the poloidal motion frequency andω is the mode frequency.The nonlinear evolutions of NRFB's mode structures and Poincaré plots are also analyzed in this work and it is found that the NRFB can induce evident energetic-ion loss/redistribution,which can degrade the performance of the plasmas.These findings are conducive to understanding the mechanisms of NRFB induced energetic-ion loss/redistribution through nonlinear wave-particle interaction.
文献关键词：
中图分类号：
作者姓名：
Xiaolong ZHU;Feng WANG;Wei CHEN;Zhengxiong WANG
作者机构：
Key Laboratory of Materials Modification by Laser,Ion and Electron Beams(Ministry of Eduction),School of Physics,Dalian University of Technology,Dalian 116024,People's Republic of China;Joint Laboratory for Fusion Product and Energetic Particles,Southwestern Institute of Physics,Chengdu 610041,People's Republic of China
文献出处：
引用格式：
[1]Xiaolong ZHU;Feng WANG;Wei CHEN;Zhengxiong WANG-.Interaction between energetic-ions and internal kink modes in a weak shear tokamak plasma)[J].等离子体科学和技术（英文版）,2022(02):28-35
A类：
NRFB
B类：
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AB值：
0.498161
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