Influence of the radial electric field on the shearless transport barriers in tokamaks
Influence of the radial electric field on the shearless transport barriers in tokamaks
In tokamaks, internal transport barriers, produced by modifications of the plasma current profile, reduce particle transport and improve plasma confinement. The triggering of the internal transport barriers and their dependence on the plasma profiles is a key nonlinear dynamics problem which is still under investigation. We consider the onset of …