The reversibility of magnetic reconnection

The reversibility of the transfer energy from magnetic field to surrounding plasma during reconnection is examined. Trajectories test particles in an analytic model fields demonstrate that irreversibility associated with separatrix crossings and regions weaker field. Inclusion a guide increases degree reversibility. Full kinetic simulations particle-in-cell code support these results while time-reversed at first "un-reconnect", they eventually evolve into reconnecting state.