Fig. 4: Spatial frequency ELM profile.
From: Effect of energetic ions on edge-localized modes in tokamak plasmas
a,b, Spectrograms of the radial velocity (ur) of n = 8 mode in the MHD (a) and hybrid (b) multi-n simulations in the radial coordinate (ρpol) and frequency (f) plane. The hybrid simulation shown in b considers the NBI energy Ebirth = 60 keV and βEP = 1.0%, where βEP is the ratio between fast-ion pressure peak and magnetic pressure.
