Plasma installation for research of plasma-surface interaction

Abstract

This work describes some of the features of the developed plasma setup for studying surfaceplasma interactions. Results of the study of the interaction of tungsten and beryllium with plasma are presented. This facility is intended for testing materials and equipment of the Kazakhstan Materials Science Tokomak and for conducting a study of plasma-surface interactions. The main elements of a plasma installation are an electron beam gun, a plasma-beam discharge chamber, a vacuum interaction chamber, a cooled target device, an electromagnetic system consisting of electromagnetic coils, a lock device for quick changing and moving diagnostic tools or irradiated samples without depressurization of the installation. Experiments to study changes in the structure of tungsten and beryllium during plasma exposure have shown that after irradiation, the surface is subjected to erosion and pores form on the surface.