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Published online by Cambridge University Press: 13 March 2009
The electrostatic instability of bounded beam –plasma systems as well as its consequences on the ignition of the beam –plasma discharge (BPD) at low pressures and magnetic field strengths are investigated. For this purpose, configurations consisting of a finite radius electron-beam –plasma system whose edge is far away from a confining coaxial metallic container are considered; an ambient, partially ionized gas filling the container is also present.