Morphology of Destructions of Solid Bodies under Irradiation by a High-Current Electron Beam in Filamented and Self-Focused Mode

摘要

The autographic method was used to study the morphology of the damage occurring on the surface of metals and in polymethylmethacrylate (PMMA) after a single exposure to an electron beam formed in the vacuum diode of a pulsed electron accelerator in the modes of filamentation and self-focusing. It was found that in the zones of interaction between the filamentous beam and PMMA at a depth of $40-80 mumathrm{m}$, micro-fractures of a round and more complex shape with a diameter of $10-50 mumathrm{m}$ form. The mechanism of local microdestruction formation is analyzed.