New results on microsecond E-beam generation for plasma heating experiments

New results on microsecond electron beam generation on the U-3 accelerator for plasma heating experiments at the GOL-3 device are presented. The electron beam is generated in the vacuum diode and the plasma filled diode and 20-fold focused in a mirror magnetic field. The energy spectrum of beam electrons was measured by magnetic analyzer and the broadening of spectrum width was observed in the experiments on dense (n∼5.10¹⁵ cm⁻³) plasma heating. The annular structure of the beam in the beginning of pulse was detected and possible reasons are discussed. First results of experiments on beam generation in the plasma filled diode are presented.