Electron-Impact Ionization and Electron Attachment Cross Sections of RadicalsImportant in Transient Gaseous Discharges

摘要

Electron-impact ionization and electron attachment cross sections of radicals andexcited molecules were measured using an apparatus that consists of an electron beam, a molecular beam and a laser beam. The information obtained is needed for the pulse power applications in the areas of high-power gaseous discharge switches, high-energy lasers, particle beam experiments, and electromagnetic pulse systems. The basic data needed for the development of optically-controlled discharge switches were also investigated in this program. Transient current pulses induced by laser irradiation of discharge media were observed and applied for the study of electron-molecule reaction kinetics in gaseous discharges.