摘要
In the presence of energetic particles(EPs)from auxiliary heating and burning plasmas,fishbone instability and Alfvén modes can be excited and their transition can take place in certain overlapping regimes.Using the hybrid kinetic-magnetohydrodynamic model in the NIMROD code,we have identified such a transition between the fishbone instability and theβ-induced Alfvén eigenmode(BAE)for the NBI heated plasmas on HL-2 A.When the safety factor at magnetic axis is well below one,typical kink-fishbone transition occurs as the EP fraction increases.When q0 is raised to approaching one,the fishbone mode is replaced with BAE for sufficient amount of EPs.When q0 is slightly above one,the toroidicity-induced Alfvén eigenmode dominates at lower EP pressure,whereas BAE dominates at higher EP pressure.
作者
Zhihui ZOU
Ping ZHU
Charlson C KIM
Xianqu WANG
Yawei HOU
邹志慧;朱平;金智善;王先驱;侯雅巍(CAS Key Laboratory of Geospace Environment and Department of Plasma Physics and Fusion Engineering,University of Science and Technology of China,Hefei 230026,Peoples's Republic of 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,Wuhan 430074,Peoples's Republic of China;Department of Engineering Physics,University of Wisconsin-Madison,Madison,Wisconsin 53706,United States of America;SLS2 Consulting,San Diego,California 92107,United States of America;Institute of Fusion Science,School of Physical Science and Technology,Southwest Jiaotong University,Chengdu 610031,Peoples's Republic of China)
基金
supported by the National Magnetic Confinement Fusion Science Program of China(No.2019YFE03050004)
National Natural Science Foundation of China(Nos.11875253,11775221,51821005)
the Fundamental Research Funds for the Central Universities at University of Science and Technology of China(No.WK3420000004)
Huazhong University of Science and Technology(No.2019kfy XJJS193)
the Collaborative Innovation Program of Hefei Science Center,CAS(No.2019HSC-CIP015)
the U.S.Department of Energy(Nos.DE-FG02-86ER53218 and DE-SC0018001)。
