円形断面放電室をもつホールスラスタにおけるプラズマ?イオンビーム特性

摘要

The problem of existing cylindrical Hall thruster is an unusual large beam divergence of the plasma plume. Becausethe cylindrical Hall thruster has possibly stronger radial electric field than conventional Hall thruster，moreenergetic ions may escape at large angles with respect to the thruster axis causing thrust reduction and erosion. Inother type of Hall thrusters，reduction of plasma plume angle by using a segmented electrode was confirmed. In thisstudy, the effects of segmented electrodes on cylindrical Hall thruster performance and on plasma characteristics areinvestigated.