圆柱形阳极层霍尔推进器的工作特性与离子束流研究

Operation Characteristics and Ion Beam Distribution of Cylindrical Anode Layer Hall Thruster

主要对圆柱形阳极层霍尔推进器进行实验研究，得到推进器的工作特性、离子束分布、束流中电子的含量等结果。并且给出圆柱形阳极层霍尔推进器的最佳工作参数：工作电压在700～1000V之间，电流在0．15～0．65A，气体流量低于8mL／min。从离子束流的径向分布可知：高电压、低电流、小气量时离子束的发散角较小。

The structures and the operation characteristics of the cylindrical anode layer Hall thruster were experimentally studied. The ion beam distribution and electron density of the ion beam were evaluated with the lab - built setup, made up of six probes. The impacts of the operation conditions, such as the operating voltage, discharge current, pressure, and gas flow rate, on the operation characteristics were evaluated. The results show that the ion beam divergence angle depends to a varying degree on the operation conditions. For instance, a smaller divergence angle was found to originate from a higher voltage, a lower discharge current and a weaker gas flow rate. The optimized conditions were found to be an operating voltage ranging from 700 to 1000 V, a discharge current in the range of 0.15 to 0.65 A, and a gas flow rate of 8 ml/min.