Magnetic Reconnection.
Abstract
Reconnection at an x point is forced by moving together two parallel wires carrying currents in the same direction. For small wire displacements, the MHD equations can be linearized, and analytic solutions can be obtained. After the linearization breaks down, the behavior is estimated by making use of scaling arguments. The results are interpreted in terms of several current reconnection theories. It is concluded that reconnection speeds as high as the local Alfven speed are possible. The energetics of the linear tearing mode are analyzed and the energy is calculated directly by solving for the magnetic field to second order in the perturbation amplitude. Resistive effects can be important outside of the usual resistive layer encountered in the linear theory. If the magnetic energy density is defined to be sq B/2, then at points farther than a skin distance from the singular layer, the magnetic energy density increases.
 Publication:

Ph.D. Thesis
 Pub Date:
 May 1978
 Bibcode:
 1978PhDT........16A
 Keywords:

 Physics: Fluid and Plasma;
 Electric Wire;
 Magnetic Circuits;
 Magnetic Flux;
 Magnetohydrodynamics;
 Current Density;
 Flux Density;
 Linear Systems;
 Perturbation Theory;
 Tearing;
 Plasma Physics