Three-Dimensional Reconnection And Relaxation Of Merging Spheromak Plasmas

Articles you may be interested in Bulk ion acceleration and particle heating during magnetic reconnection in a laboratory plasmaa) The influence of intense electric fields on three-dimensional asymmetric magnetic reconnection Publisher's Note: " Three-dimensional reconnection and relaxation of merging spheromak plasmas " [Phys. Magnetohydrodynamic study of three-dimensional instability of the spontaneous fast magnetic reconnection Plasma relaxation inside a highly conducting cylindrical boundary is studied both experimentally and computationally. Dynamics are initiated by the introduction of two equal helicity spheromaks at either end of the cylinder. In the experiment, dense, high-magnetic-flux spheromaks are injected into the flux conserving volume with magnetized plasma guns. In the simulation, identical spheromaks initially occupy both halves of the cylinder and a perturbation is introduced. Merging commences with a single three-dimensional null-point that moves radially out of the flux conserving volume at velocities up to 0.2 of the reconnection outflow velocity. Relaxation to the minimum energy state occurs in about ten Alfvén times. An important conclusion is that even though the dynamical activity is limited to a few modes, this activity is sufficient to promote relaxation to the final, minimum energy state. The dynamical activity appears to conserve magnetic helicity while magnetic energy is converted to flow and heat. The final state arrived at dynamically is identical to that described by C. D. Cothran et al. ͓Phys.