The distributions of plasma parameters in the "Magnetor" device with hot cathode discharge

Abstract

The dipole magnetic configuration as realized in planet magnetospheres is of interest for controlled fusion plasma confinement. This type of magnetic trap is free of convective instability. Distributions of plasma parameters in "Magnetor" device with double dipole magnetic configuration that allows restrict considerable volume of confined plasma are investigated. The comparison of plasma parameters distribution inside the trap for two plasma generation methods: microwave discharge at 2,45GHz and hot cathode discharge in crossed E and B fields are made. It is shown that plasma is localized inside the magnetic separatrix for both types of discharges. To determine possible additional plasma movements caused by the presence of the electric field in the magnetic configuration measurements of plasma flows in discharge with the hot cathode in crossed E and B fields are carried out. Two directions of plasma flows with flux density 1016÷1017cm−2s−1 inside the magnetic trap are determined: the flow along the axis leading particles leaving from a trap through weak magnetic field region and the flow caused by plasma azimuth drift.