Discharge Characterization of 40-Centimeter Microwave Electron Cyclotron Resonance Ion Source and Neutralizer
Discharge Characterization of 40-Centimeter Microwave Electron Cyclotron Resonance Ion Source and Neutralizer
复制标题
40厘米微波电子回旋共振离子源和中和器的放电特性
DOI：
10.2514/1.4932
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发表时间：
2005
影响因子：
1.9
通讯作者：
M. Patterson
中科院分区：
文献类型：
--
作者：
J. Foster;M. Patterson
获得了40 cm、2.45 ghz电子回旋共振离子推力器放电室和中和器的放电特性。使用单个朗缪尔探针评估了推力器体放电等离子体特性。测量了总可提取离子电流作为输入微波功率和流速的函数。此外，利用五个等间距的法拉第探针对推进器出口平面的径向离子电流密度分布进行了表征。当放电输入功率在0 ~ 200w范围内变化时，观察到不同的低、高密度工作模式。在高模式下，可提取的离子电流高达0.82 A。中和剂发射电流是流量和微波功率的函数。中和剂萃取电流高达0.6 A。
Discharge characteristics of a 40-cm, 2.45-GHz electron cyclotron resonance ion thruster discharge chamber and neutralizer were acquired. Thruster bulk discharge plasma characteristics were assessed using a single Langmuir probe. An estimate of the total extractable ion current was measured as a function of input microwave power and flow rate. Additionally, radial ion current density profiles at the thruster's exit plane were characterized using five equally spaced Faraday probes. Distinct low- and high-density operating modes were observed as discharge input power was varied from 0 to 200 W. In the high mode, extractable ion currents as high as 0.82 A were measured. Neutralizer emission current was characterized as a function of flow rate and microwave power. Neutralizer extraction currents as high as 0.6 A were measured.