Stochastic Reconnection for Large Magnetic Prandtl Numbers

We consider stochastic magnetic reconnection in high-β plasmas with large magnetic Prandtl numbers, Prm > 1. For large Prm, field line stochasticity is suppressed at very small scales, impeding diffusion. In addition, viscosity suppresses very small-scale differential motions and therefore also the local reconnection. Here we consider the effect of high magnetic Prandtl numbers on the global reconnection rate in a turbulent medium and provide a …