Response of a field-permeated cylindrical plasma let confined by a field-permeated flowing plasma

The plasma-flow confinement of a cylindrical plasma jet is subjected to excitations by two azimuthally conducted current distributions, one immersed in each field-permeated plasma medium. Both flows are generally unequal but unidirectional; however, one or both of the plasma media may be stationary. A general approach is first made, followed by a specific case study wherein the confining plasma has the higher Alfven speed and the difference between both Alfven speeds exceeds, in magnitude, the difference between both flow speeds. If, additionally, both flows are either subAlfvenic or superAlfvenic, then the interface supports refracted and reflected dispersive waves; moreover, the permeating magnetic fields support non-dispersive flow-modified Alfven waves, some of which also participate in reflection, while others constitute internal radiation. The steady state for time-independent currents is examined under different criteria. These admit stationary waves. (author)