Spatial distribution of a plasma vortex obtained under gyromagnetic resonance in the mirror magnetic trap

The spatial configuration of a plasma vortex with the middle relativistic electron component produced under the gyromagnetic autoresonance and confined in the mirror magnetic trap have been studied experimentally and by numerical modeling using a particle in the cell method. Characteristics of bremsstrahlung generated by the plasma vortex on gas and chamber walls were investigated by the X-ray spectrometry and radiometry methods. Obtained results and their analysis have allowed to define the vortex localization and dynamics. The sizes of the bunch: the radius is 2 cm; the size along the axis is about 0.5 cm. The number of electrons trapped in gyromagnetic autoresonance mode is 50-70 percent of the number of electrons in the initial plasma.