Charged E-layer

A possibility is considered of the existence of a charged stationary state of an electron beam confined by an external homogeneous magnetic field with the reversal of the magnetic field within the limits of the beam (E-layer). Self-consistent solutions have been obtained both in the absence of electrostatic neutralization and with partial neutralization of the beam by ions. In the first case the magnetic field reversal is achieved by imposing a radial electrical field of a charged bar, placed along the axis of a circular electron beams. In the second case the beam charge is supposed to be partially neutralized by ions, their density being distributed over the beam cross section so that the coefficient of the charge neutralization is constant over the cross section. The conditions of the magnetic field reversal have been obtained for both cases