Abstract

In a plasma formed by charged and neutral particles, the first species should evolve according to the laws of magnetohydrodynamics while the second would obey the Navier–Stokes equations. However, collisions between both species provide a friction that couples their motion and has important consequences in the long-term evolution of the plasma. It is found that there exist long periods of stability where the energy of each species as well as the magnetic energy tends to be roughly constant, punctuated by short intervals of rapid transfer of energy. Since at these events both the Lorentz force and the Hall term are very large, they could be identified as episodes of fast magnetic reconnection.

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