摘要
文章着眼于提高地球同步轨道(GEO)空间地磁亚暴带电效应模拟的真实度,对多能量电子模拟空间地磁亚暴带电的方法进行分析评估。首先采用单一能量电子束的地面试验对SENSIT工程软件进行了校准；然后参考地磁亚暴环境能谱,用该软件对Kapton样品在单一电子束、双电子束、全能谱电子辐照下的充放电特性进行了计算预示。研究表明：表面充电速率受控于电流密度；在12．5keV/32．5keV电子束组合时其效应模拟的结果最有代表性；在双电子束模拟中,较高能量电子源起关键作用。
This paper provides the assessments of multi-energy electron simulation method for GEO substorm charging effect study.Prediction results of an engineering code named SENSIT are given in comparison with single-beam ground test results.Then SENSIT prediction results is presented of Kapton samples exposed to single-electron beam,dual beams and full spectrum beams with corresponding Maxwell spectrum current densities.It is found that a) A dual-beam combination of 12.5 keV /32.5 keV is more indicative of predicted charging behaviors; b) Surface charging rate is controlled by current density; 3) The choice of the beam energy for the second source is important.
出处
《航天器环境工程》
2005年第5期289-294,共6页
Spacecraft Environment Engineering
关键词
地磁亚暴
电子辐照
充放电
GEO substorm
electron irradiation
charge and discharge
