Existence of core localized toroidicity‐induced Alfvén eigenmode
نویسندگان
چکیده
منابع مشابه
Anomalous flattening of the fast-ion profile during Alfvén-Eigenmode activity.
Neutral-beam injection into plasmas with negative central shear produces a rich spectrum of toroidicity-induced and reversed-shear Alfvén eigenmodes in the DIII-D tokamak. The first application of fast-ion D_{alpha} (FIDA) spectroscopy to Alfvén-eigenmode physics shows that the central fast-ion profile is anomalously flat in the inner half of the discharge. Neutron and equilibrium measurements ...
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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 ...
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ژورنال
عنوان ژورنال: Physics of Plasmas
سال: 1995
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.871382