河北师范大学学报—

期刊信息

刊名：河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
主办：河北师范大学
ISSN： 1000-5854
CN： 13-1061/N
中国科技核心期刊
中国期刊方阵入选期刊
中国高校优秀科技期刊
华北优秀期刊
河北省优秀科技期刊

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等离子体环境引起的卫星表面不等量充电

郝建红¹

茹彪¹

赵强²

张芳²

范杰清¹

董志伟²

（1.华北电力大学电气与电子工程学院，北京 102206； 2.北京应用物理与计算数学研究所，北京 100094）
DOI： 10.13763/j.cnki.jhebnu.nse.202202015

Research of Satellite Surface Unequal Charging by the Plasma Environment Caused

HAO Jianhong¹,RU Biao¹,ZHAO Qiang²,ZHANG Fang²,FAN Jieqing¹,DONG Zhiwei²

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摘要/Abstract

摘要：

研究复杂环境对束流传输的影响在空间探测及空间物理等领域都有重要意义. 相比于在真空中电子束的传输，采用不均匀密度分布的背景等离子体可以使束流在传输过程中所受的箍缩力与发散力之间有更好的平衡，以此实现不同应用场合中电子束流的有效传输. 基于实验室实现和契合准备目的，使用粒子模拟（particle-in-cell，PIC）方法，对不同密度分布的背景等离子体中电子束传输特性进行计算分析. 结果表明，在无碰撞条件的中性背景等离子体中，背景等离子体呈1/4 sin周期分布更加有利于电子束的稳定传输.

Abstract：

When the Geosynchronous orbit(GEO) Satellite runs in a sun-wind plasma environment, the plasma causes the satellite different structural(material different) surface charge accumulation inconsistencies to produce an unequal charging effect. This work builts a PIC model(particle-in-cell) to simulate the change in the surface potential of satellite in the plasma environment, which can deepen the understanding of the unequal charging, and explore the PIC method of the satellite surface charge. By building a satellite structure and solar panel 3D-PIC model, we calculate the potential of each solar panel of the sun activity, and explore the potential difference between the different parts of the satellite and the potential difference between the solar panels. And we compare the battery board potential of the sun activity calm and active period. The results show that there is a difference in surface charging potentials in different structures in the plasma environment, and the unequal charging effect is obvious. The active speed in the sun activity is far greater than that in the calm period in the sun, which is easy to cause satellite device damaged to be by the high-potential charge in a very short period of time. The PIC method is proved to be feasible in researching satellite unequal charging.

关键词

关键词： 等离子体；表面电荷积累；不等量充电； PIC方法

Key words： plasma ; surface charge accumulation ; unequal charging ; PIC method

参考文献 15

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