Generation of subrelativistic electrons at a nanosecond discharge in dense gas

Summary form only given. The generation of high-current beam of subrelativistic electrons in a gas discharge was possible until recently only in the conditions of high or low vacuum. The experimental results on beam generation of electrons with energy up to 250 keV in air under normal conditions and in a number of other gases are resulted in the report. The experimental data are interpreted using the physical model of the discharge named as corona discharge with runaway electrons. Some of basic properties of the discharge allowing, in particular, to operate such parameters of a fast electron beam as its direction, density, aperture, and beam electron energy are investigated experimentally.