Modeling of the propagation of electron beam generated by a forevacuum-pressure plasma electron source based on a cathodic arc

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Authors: Bakeev I. Yu., Medovnik A. V., Kazakov A. V.

Annotation: The model for the propagation of large-radius electron beam generated by a forevacuum-pressure plasma elec- tron source based on a cathodic arc is presented. This model describes the behavior of the electron beam and the particles produced in electron ionization of residual gas molecules, i.e. beam plasma. The simulation has defined the role of the mechanisms responsible for changes in the current density distribution of the beam while it is spread. The compression of the beam is caused by electron beam own magnetic field. On the other hand the beam affects the scattering of electrons in the molecules of the residual gas.

Keywords: electron beam, forevacuum, modeling of beam propagation