# Nonlinear excitation of finite-radial-scale zonal structures by toroidal Alfvén eigenmode

@article{Qiu2016NonlinearEO, title={Nonlinear excitation of finite-radial-scale zonal structures by toroidal Alfv{\'e}n eigenmode}, author={Zhiyong Qiu and Liu Chen and Fulvio Zonca}, journal={Nuclear Fusion}, year={2016}, volume={57} }

The set of equations describing nonlinear evolution of a single toroidal Alfvén eigenmode are derived, including both zero frequency zonal structure (ZFZS) generation and wave-particle phase space nonlinearities. The simplified case of neglecting wave-particle phase space nonlinearity is then investigated to focus on different roles of energetic particles and bulk plasmas on ZFZS generation. It is shown that energetic particles and bulk plasma play dominant roles in ZFZS generation in different…

## 6 Citations

### Nonlinear reversed shear Alfvén eigenmode saturation due to spontaneous zonal current generation

- PhysicsJournal of Plasma Physics
- 2021

General nonlinear equations describing reversed shear Alfvén eigenmode (RSAE) self-modulation via zero-frequency zonal structure (ZFZS) generation are derived using nonlinear gyrokinetic theory,…

### Nonlinear Coupling of Reversed Shear Alfvén Eigenmode and Toroidal Alfvén Eigenmode during Current Ramp

- PhysicsChinese Physics Letters
- 2021

Two novel nonlinear mode coupling processes for reversed shear Alfvén eigenmode (RSAE) nonlinear saturation are proposed and investigated. In the first process, the RSAE nonlinearly couples to a…

### High frequency mode generation by toroidal Alfvén eigenmodes

- PhysicsPhysics of Plasmas
- 2019

Nonlinear generation of high frequency mode (HFM) by toroidal Alfven eigenmode (TAE) observed in HL-2A tokamak is analyzed using nonlinear gyrokinetic theory. It is found that, the HFM can be…

### Nonlinear Decay and Plasma Heating by a Toroidal Alfvén Eigenmode.

- PhysicsPhysical review letters
- 2018

It is demonstrated theoretically that a toroidal Alfvén eigenmode (TAE) can parametrically decay into a geodesic acoustic mode and kinetic TAE in a toroid plasma, which could contribute to the heating as well as regulating the transports of thermal plasmas.

### Transport theory of phase space zonal structures

- PhysicsPhysics of Plasmas
- 2019

We adopt gyrokinetic theory to extract the phase space zonal structure from the flux surface averaged particle response, that is, the nonlinear response that is undamped by collisionless processes.…

### Summary of magnetic fusion plasma physics in 1st AAPPS-DPP meeting

- Physics
- 2018

This article consists of summary of the presentations in magnetic fusion plasma section of the 1st Asia–Pacific conference on plasma physics. Recent significant progresses achieved in steady state…

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