The method of formation of powerful electron beams (EBs) with nanosecond duration has been described (electron energyu≈10 to 20 keV and beam currentlEB>1 kA) in the medium pressure gas which is simultaneously the laser active medium. The value oflEB=7 kA has been achieved atU=22 kV, τ=20 ns andpNe=300 Pa in a coaxial cell 330 mm long and 99 mm in diameter. The 3 kA current from the cathode with 60 cm2square in the shape of a segment of a sphere 140 mm in diameter has been achieved atU=23 kV, τ=15 ns andpNe=300 Pa. With the help of a magnetic field this beam has been transported to a distance of up to 100
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