bulence, the diffusive escape of field lines from 2D orbits is suppressed by either a strong or an irregular 2D field. For slab turbulence superposed on a 2D field with a single, circular island
bulence,the diffusive escape of field lines from 2D orbits is suppressed by either a strong or an irregular 2D field. Forslab turbulence superposed on a 2D field with a single, circular island