Table 1 Characteristics of different modes of DIII-D QH mode in BOUT + + modeling
From: How turbulence spreading improves power handling in quiescent high confinement fusion plasmas
Mode | \({{{{{\boldsymbol{f}}}}}}{{{{{\boldsymbol{,}}}}}}{{{{{{\boldsymbol{k}}}}}}}_{{{{{{\boldsymbol{\theta }}}}}}}\) | Direction (lab frame) | Radial mode envelope | Driving mechanism | Stability | Impact on \({{{{{{\boldsymbol{\lambda }}}}}}}_{{{{{{\boldsymbol{q}}}}}}}\) |
Peeling-ballooning mode (PBM) | Low frequency, long wavelength | Ion diamagnetic | Pedestal top to SOL | Edge bootstrap current\({J}_{{BS}}\) and pressure gradient \(\nabla P\) | Sensitive to \(\nabla {T}_{i}\) | Strong |
Drift Alfvén Wave (DAW) | High frequency, intermediate-short wavelength | Electron diamagnetic | Localized at upper pedestal | Parallel passing electrons \(\nabla {n}_{e},\nabla {T}_{e}\) | Sensitive to \(\nabla {T}_{e}\), insensitive to \(\nabla {T}_{i}\) | Weak |
