Plasma Emission Sources for High-Current Electron Beam Generation

Summary form given only. Main results of recent experimental research of passive and active plasma sources for high-current electron beam generation obtained during the last years in the Plasma & Pulsed Power Laboratory will be reported. We will describe passive plasma sources (velvet cathode, slab porous dielectric) based on a flashover plasma and active plasma sources based on a ferroelectric plasma source (FPS) as well on an FPS-assisted hollow anode plasma source. Different time and space-resolved electrical, optical and spectroscopic diagnostics used in these experiments will be described as well. The main data concerning the plasma parameters (plasma density and temperature, plasma uniformity and plasma potential) and the main features of these plasma sources (plasma formation, life time, vacuum compatibility) will be discussed. Also we will discuss the obtained data concerning electron diode operation and parameters of the generated electron beam while using these plasma sources.