Анотація:
In this paper the results of investigations of properties of solitary perturbation of large amplitude, propagating with light velocity at small angle to strong magnetic field in plate plasma-filled waveguide, are presented. This solitary perturbation is the hollow of electric potential. The hump of electric potential can be excited as a wake-field by electron bunch, but the hollow of electric potential, considered in this paper, is excited as a precursor of electron bunch. Because this hollow forms the positive spike of electron density, it can be excited as a precursor of laser pulse.