Creating and using of superdense micro-beams of relativistic electrons

The problem of creation and the results of experimental investigation of superdense subrelativistic electrons micro-beams with current density 1010 A/cm2⩽j⩽1014 A/cm2, duration Δt=1–10 ns and energy about 0.01–1 MeV are discussed. The interaction of these micro-beams with condensed target and ions beams are investigated. The problems of isomers excitation and active medium for both X-ray laser and gamma-laser creation by use of super-dense electrons micro-beams are also studied.