Nonlinear saturation of reversed shear Alfvén eigenmode via high-frequency quasi-mode generation
Abstract A nonlinear saturation mechanism for reversed shear Alfvén eigenmode (RSAE) is proposed and analyzed, and is shown to be of relevance to typical reactor parameter region. The saturation is achieved through the generation of high-frequency quasi-mode due to nonlinear coupling of two RSAEs, which is then damped due to coupling with the shear Alfvén continuum, and leads to the nonlinear saturation of the primary RSAEs. An estimation of the nonlinear damping rate is also provided.
Authors
- Zhiyong Qiu (ORCID: https://orcid.org/0000-0002-7548-8819)
- Lei Ye (ORCID: https://orcid.org/0000-0002-6505-6625)
- Guangyu Wei (ORCID: https://orcid.org/0000-0001-8555-4229)
- Zhiwen Cheng (ORCID: https://orcid.org/0009-0006-1426-0673)
Institutions
- National Agency for New Technologies, Energy and Sustainable Economic Development (IT)
- Hefei Institutes of Physical Science (CN)
- Institute of Plasma Physics (CN)
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati (IT)
- Zhejiang University (CN)
Publication Details
- Journal
- Plasma Science and Technology
- Published
- 2024-10-17
- DOI
- https://doi.org/10.1088/2058-6272/ad8814
- Citations
- 1
- Primary Topic
- Fluid Dynamics and Vibration Analysis
- Type
- article
- Field-Weighted Citation Impact
- 0.37
Funders
- National Natural Science Foundation of China