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Shear Alfvén waves within magnetic islands

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成果类型:
期刊论文
作者:
Koenies, Axel;Cao, Jinjia;Kleiber, Ralf
通讯作者:
Koenies, A
作者机构:
[Koenies, Axel; Koenies, A; Kleiber, Ralf] Max Planck Inst Plasma Phys, Wendelsteinstr 1, D-17489 Greifswald, Germany.
[Cao, Jinjia] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
通讯机构:
[Koenies, A ] M
Max Planck Inst Plasma Phys, Wendelsteinstr 1, D-17489 Greifswald, Germany.
语种:
英文
关键词:
Magnetoplasma;Plasma stability;Shear flow;Alfven eigenmodes;Constant shear;Cylindrical plasmas;Eigen modes;Magnetic confinement fusions;Magnetic island;Magneto hydrodynamics;Plasma equilibrium;Shear Alfven waves;X-parameters;Magnetohydrodynamics
期刊:
Nuclear Fusion
ISSN:
0029-5515
年:
2024
卷:
64
期:
5
页码:
054001
基金类别:
This work has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200—EUROfusion). Views and opinions expressed are however those of the authors only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the European Commission can be held responsible for them. Jinjia Cao, was supported by a grant from the ITER Project of Ministry of Science and Technology of China (Grant No. 2022YFE03080002).
机构署名:
本校为其他机构
院系归属:
核科学技术学院
摘要:
We calculate Alfvén eigenmodes within a magnetic island (MiAE) which have been conjectured over a decade ago. Starting from a cylindrical plasma equilibrium, we calculate the complete metric of the island interior assuming an iota profile with a constant shear for Wendelstein 7-X parameters. Then, we solve the resulting Magneto-Hydrodynamic equations inside the island optionally considering Finite Larmor Radius corrections. We find various eigenmodes in the lowest gaps for n = 0. The eigenmode with the lowest frequency shows a weakly non-linea...

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