An apparatus and method for thrusting plasma, utilizing a Hall thruster
with segmented electrodes along the channel, which make the acceleration
region as localized as possible. Also disclosed are methods of arranging
the electrodes so as to minimize erosion and arcing. Also disclosed are
methods of arranging the electrodes so as to produce a substantial
reduction in plume divergence. The use of electrodes made of emissive
material will reduce the radial potential drop within the channel, further
decreasing the plume divergence. Also disclosed is a method of arranging
and powering these electrodes so as to provide variable mode operation.
