A theory for plasma confinement in snakes is developed based on the consequences of the momentum transport resulting from the symmetry-breaking- induced plasma viscosity in the vicinity of an m=1 magnetic island. Here, m is the poloidal mode number of the island. The symmetry-breaking mechanism is the distortion of the magnetic surface associated with the magnetic island embedded in the equilibrium magnetic field. It is demonstrated that a combination of the turbulence suppression and the effects of the orbit squeezing could be responsible for the observed improved plasma confinement in snakes.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics