| 卫星尾迹带电数值模拟研究 |
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| 引用本文： | 秦晓刚,李得天,汤道坦,柳青,陈益峰.卫星尾迹带电数值模拟研究[J].真空与低温,2012(1):38-42. |
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| 作者姓名： | 秦晓刚 李得天 汤道坦 柳青 陈益峰 |
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| 作者单位： | 兰州空间技术物理研究所真空低温技术与物理重点实验室 |
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| 基金项目： | 真空低温技术与物理重点实验室基金(9140A110509HT0503)资助 |
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| 摘 要： | 基于运行于低轨道"冷稠"等离子体环境中的卫星可以在其尾部形成电子和离子浓度不等量的尾迹,尾迹效应可严重影响卫星的表面不等量带电。因此,在分析卫星尾迹效应物理机制的基础上,建立了尾迹效应的二维简单计算模型,利用PIC(particle-in-cell)方法编制二维模拟程序,计算了不同尺寸卫星的尾迹电位分布和高能电子注入下的卫星尾迹电位分布,从而得到了卫星尾迹带电和卫星尺寸及高能电子注入之间的关系。
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| 关 键 词： | 尾迹带电 PIC 数值计算 |
A STUDY OF SPACECRAFT WAKE CHARGING EFFECTS NUMERICAL SIMULATIONS |
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| QIN Xiaogang,LI Detian,TANG Daotan,LIU Qing,CHEN Yifeng.A STUDY OF SPACECRAFT WAKE CHARGING EFFECTS NUMERICAL SIMULATIONS[J].Vacuum and Cryogenics,2012(1):38-42. |
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| Authors: | QIN Xiaogang LI Detian TANG Daotan LIU Qing CHEN Yifeng |
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| Affiliation: | (Key Lab.of Vacuum & Cryogenics Technology and Physics,Lanzhou Institute of Physics,Lanzhou 730000,China) |
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| Abstract: | A wake area where electrons and ions currents are diferent wil form behind a spacecraft in LEO cold,dense plasma environment.The wake effects will devlelop a different charging on the surface of a spacecraft.In this paper we analyse the physical mechanism of wake charging effects.A two-dimensions simple calculation model.is discussed.Then a computer code on particle-in-cell method are developed.The spacecraft wakes potential of diferent scales are caculated,including high electrons entering.The results prove that wake effects are dependent on the scale of a spacecraft and the energy.of electrons in wakes. |
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| Keywords: | wake effects PIC numerical simulations |
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