Development of Phosphor Screen Having “Gridded Energy Analyzer” for Two-Fluid Nonneutral Plasma Experiments

Abstract

An ew type of fluorescent screen with a gridded energy analyzer is proposed. This new method clearly has an advantage of clarifying both space distribution of number density and particle energy simultaneously. The fluorescent screen has three potential grids in front of it. Us ing the set of grids, the particle energy is analyzed. The preliminary data show that the potential grids have successfully analyzed the energy o ft he injected electrons. The fluorescent screen seems to emit visible light even af ter the number of electrons is somewhat reduced by the potential grids.