# How eigenmode self-interaction affects zonal flows and convergence of tokamak core turbulence with toroidal system size

@article{CJ2020HowES, title={How eigenmode self-interaction affects zonal flows and convergence of tokamak core turbulence with toroidal system size}, author={Ajay C. J. and Stephan Brunner and Ben F. McMillan and Justin Ball and Julien Dominski and Gabriele Merlo}, journal={Journal of Plasma Physics}, year={2020}, volume={86} }

Self-interaction is the process by which a microinstability eigenmode that is extended along the direction parallel to the magnetic field interacts non-linearly with itself. This effect is particularly significant in gyrokinetic simulations accounting for kinetic passing electron dynamics and is known to generate stationary $E\times B$ zonal flow shear layers at radial locations near low-order mode rational surfaces (Weikl et al. Phys. Plasmas, vol. 25, 2018, 072305). We find that self…

## 8 Citations

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