  New non-stationary non-contracted form of the erosive radially-slotted
discharge as a thin round sheet with the current of the azimuth direction have
been discovered, its existence beings stipulated by a radial transport-wave
fluxes. Characteristic features of this discharge is self-confinement of the
discharge current magnitude, corresponding decrease of the current pulse
duration and occurrence of an energy and substance ejection with rather unusual
properties. Measurements of kinetics of the discharge current, the plasma
radiation intensity and an electrical probe signal, as well as the transmission
electron microscope investigations of characteristic aerodisperse aggregates
arising the erosive phase, have been carried out. The probe signal duration was
about 10 times greater than that of the current; its kinetics was complicated
suggesting existence in the slot of two components with fundamentally different
properties and states of the substance.
