Properties of a Plasma Created by an Electron Beam

Some properties of a plasma formed by an ionizing electron beam have been investigated. The electron beam and the plasma were confined by an axial magnetic field. The experiments, which were performed in argon in the pressure range 5·10−5−1·10−3 mm Hg, showed that densities of the order 1012–1013 ion pairs/cm3 could easily be achieved. Some types of oscillations that occurred are discussed.