Генерация электронного пучка в азоте и гелии при низком напряжении на газовом диоде

It was demonstrated experimentally that the beam of runaway electrons is generated at discharge ignition in nitrogen and helium atmosphere at low voltage on gas diode (~25 kV) and generation modes may be various and depend on gas pressure. Delay of starting electron beam generation relative to voltage drop start at a gap was less than 1 ns. On the basis of influence of crosscut magnetic field 0,016 T on electron beam behavior it was supposed that nanosecond electron beam at low pressures is generated near the cathode. Influence of preionization on electron beam generation was shown.