1.
Phys Rev E Stat Nonlin Soft Matter Phys
; 86(4 Pt 2): 045401, 2012 Oct.
Article
in English
| MEDLINE
| ID: mdl-23214643
ABSTRACT
Nonlinear saturation of a beta-induced Alfvén eigenmode, driven by slowing down energetic particles via transit resonance, is investigated by the nonlinear hybrid magnetohyrodynamic gyrokinetic code. Saturation is characterized by frequency chirping and symmetry breaking between co- and counter-passing particles, which can be understood as the evidence of resonance detuning. The scaling of the saturation amplitude with the growth rate is also demonstrated to be consistent with radial resonance detuning due to the radial nonuniformity and mode structure.
2.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics
; 54(4): 4384-4393, 1996 Oct.
Article
in English
| MEDLINE
| ID: mdl-9965590