Injection of relativistic electron beam into bounded plasma systems in the presence of an external magnetic field

An induced magnetic field and the charge upon in ection of an electron beam into a radially bounded magnetoactive plasma (waveguide) are investigated. It is shown that in a magnetized plasma the nature of the radial structure of fields can change, going over from the skinned to the oscillating one. In a dense plasma the oscillation amplitude of the azimuthal magnetic field is small as compared with the proper magnetic field of the beam, so that magnetic neutralization of the beam takes place, while charge neutralization is absent. The resonance values of the system parameters are found at which a complete magnetic and charge neutralization of the beam occurs throughout its cross section even in the case of a strong magnetic field