Dependence of the beam–channel interaction force on the radial profiles of a relativistic electron beam and an ion channel in the ion-focusing regime

We have derived the formulas for calculating the force of the interaction of a relativistic electron beam with an ion plasma channel in the case of the beam transportation during ion focusing. The dependence of the difference in radial profiles of the beam and the ion channel on this force for different amplitudes of beam deviations from the channel symmetry axis has been studied.