Nonlinear saturation of a toroidal Alfvén eigenmode via ion induced scattering is investigated in the short-wavelength gyrokinetic regime. It is found that the nonlinear evolution depends on the thermal ion β value. Here, β is the plasma thermal to magnetic pressure ratio. Both the saturation levels and associated energetic-particle transport coefficients are derived and estimated correspondingly.
Gyrokinetic theory of the nonlinear saturation of a toroidal Alfvén eigenmode
Zonca F.
2019-01-01
Abstract
Nonlinear saturation of a toroidal Alfvén eigenmode via ion induced scattering is investigated in the short-wavelength gyrokinetic regime. It is found that the nonlinear evolution depends on the thermal ion β value. Here, β is the plasma thermal to magnetic pressure ratio. Both the saturation levels and associated energetic-particle transport coefficients are derived and estimated correspondingly.File in questo prodotto:
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