高压脉冲圆柱形阳极层霍尔等离子体加速器实验

Experimental investigation on pulsed high-voltage cylindrical anode layer Hall plasma accelerator

关键词:  霍尔等离子体加速器  阳极层  中频脉冲放电  实验

Key words:  Hall plasma accelerator  Anode layer  Middle-frequency pulsed discharge  Experiment

摘要:

描述了一台大尺寸高压脉冲阳极层霍尔等离子体加速器。对其磁场分布进行了分析,并进行了初步实验,包括放电特征、离子流引出特征、离子束形貌等特性,以验证大尺寸的圆柱形阳极层霍尔等离子体加速器在高功率条件下的运行状况。实验发现此霍尔等离子体加速器工作稳定,可以在较高的功率上运行(大于3kW),电流利用率较高,可超出90%,工作电压范围很宽,可在300~2kV工作,束流汇聚性良好。

Abstract:

A pulsed high-voltage cylindrical anode layer Hall plasma accelerator is described. The magnetic field is analyzed. The preliminary experiment is performed for the performance test of large scale cylindrical anode layer Hall plasma accelerator working at high power. The results, including the I-V characteristics, anode efficiency, and the feature of the ion beam, etc, are analyzed. It is shown that this device works stably. Additionally, this plasma accelerator can be operated at high power (more than 3kW). Also it has features as such high current utilization efficiency (more than 90%), wide discharge voltage range, small ion-beam divergence. 