摘要
由于低地球轨道(LEO)空间中存在等离子体,会造成航天器表面的绝对电位不同,在空间站对接等过程中容易产生静电放电,从而影响航天器的正常运行。为了更准确的研究低地球轨道高度上等离子体对航天器表面电位的影响,本文采用微波电子回旋共振(ECR)等离子体源模拟了空间等离子体,运用静电探针法获取了等离子体的伏安特性曲线,并分析了气流量和微波源功率对电子密度的影响,对模拟分析不同轨道高度空间等离子体对航天器电位影响有重要意义。
Spacecraft could be harmed by the plasma environment in the low earth orbit. The different absolute potential on the spacecraft surface can lead to triggered discharge during the docking of space station. In order to confirm the influence of plasma on spacecraft potential, microwave electron cyclotron resonance plasma source was applied to simulate the space plasma in this paper, and electrostatic probe was used to obtain the cmTent-voltage characteristic curve. The influences of the gas flux amt microwave power on electron density were analyzed. All these results are useful to analyze the influence of plasma at different orhit height space on the spacecraft potential.
出处
《真空》
CAS
2013年第6期40-42,共3页
Vacuum
关键词
等离子体
ECR
静电探针
电子密度
plasma
electron cyclotron resonance（ECR）
electrostatic probe
electron density
