Electron source for producing radial converging electron beam

Electron beam is generated by cylindrical multipoint explosive emission cathode 28 cm in diameter and 35 cm in length. The source was made according to triode scheme. Electron kinetic energy is 120 keV, beam current 2 kA, pulse duration 30 µs. The source is applied for modification of the outer surface of fuel cladding elements. Temporal and spatial characteristics of an electron flow are presented.