Evolution of the current channel of the high energy discharge at atmospheric pressure

Abstract
The processes in the magnetized plasma are influenced by spontaneous generated internal magnetic fields and induced currents. In the plasma with high density of particles convenient for ICF we can observe very fast energy transformation in range of ps or ns. In that plasma the high energy electrons and ions occur. Problem of their acceleration is under discussion. One possible mechanism is based on the transformation and dissipation of internal magnetic field. In this case the reconnection of magnetic lines can play an important role. This problem is studied for example in solar flares as well. In this paper we present results of the development of the discharge with distance of electrodes 40 cm, current of 300 A and duration in order of 100 ms. Its behavior is directed by magnetohydrodynamic phenomenon - pinching, development of helical instabilities, connection of two channels with opposite orientation of the electric current, forming of the loops, squirm of the loops and forming and disintegration of spherical forms of the squirmed loops.