Floating potential of dielectric target in plasma-beam discharge with magnet field

摘要

We present the results of investigations of the floating potential compensation of dielectric target inudselfsustained plasma beam discharge in the magnetic field. We use gridless single-stage plasma accelerators withudclosed electron drift and narrow acceleration zone without of additional electron emitter as plasma beam source.udWhen the source of such type works in collimated beam mode, lack of electrons in the ion flow leads to occurrenceudof positive charge on the target and reduces the efficiency of ion treatment. Existence of additional glow discharge inudbeam drift space can influence on target potential. We discuss experimental results of measurement of dielectricudtarget potential for different conditions and proposal to solve the problem.