A new method for creating high-current plasma channels is developed. The me
thod uses a narrow column formed by the leading particles or a nonsteady ga
s jet outflowing into a vacuum. An electric discharge device with a system
for the formation of a narrow gas column is experimentally studied. The par
ameters of emission from the plasma channel are measured. (C) 2001 MAIK "Na
uka/Interperiodica".