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低轨道磁化等离子体中运动航天器等离子体鞘层特性
Alternative TitlePLAS1ViA SHEATH OF MOVING SPACECRAFT INMAGNETIZED PLASMA OF LOW EARTH ORBIT
曹晋滨; 汪学毅; 北京8701信箱
Department空间天气学国家重点实验室
Source Publication地球物理学报
2000
Volume43Issue:4Pages:459-463
ISSN0001-5733
Language中文
Keyword航天器 等离子体鞘层 低轨道磁化等离子体
Abstract用二维静电粒子模拟程序研究了在低轨道磁化等离子体中航天器充电过程和等离子体鞘层结构.采用磁化等离子体流经航天器的物理模型,并且考虑零级对流电场的影响.结果表明航天器在低轨道空间飞时,如果不考虑光电子流,航天器会在短时间内(t=54w^-1pe,wpe是电子等离子体频率)快速充电到平衡电位.在不考虑航天器运动的情况下其周围等离子体鞘层结构是围绕航天器对称的,等离子体鞘层宽度约2.4个德拜DEBYE
Other AbstractThe charging process and plasma sheath structure of moving spacecraft in magnetized plasma of low earth orbit (LEO) are studied by means of 2.5-D electrostatic code.The relative motion is simulated by a plasma flowing past the probe and therefore a convection electric field is imposed.The results show that,in the LEO,the spacecraft is quickly (during a time interval t-54cv, cv,is electron cyclotron frequency) charged up to the equilibrium negative potential.The increase of magnetic field makes absolute value of the negative potential decrease. The plasma sheath is symmetric around the spacecraft if the motion of the plasma is not considered,and is about several Debye length.The motion of the plasma will make the plasma sheath extend in the wake region.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1349
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
曹晋滨,汪学毅,北京8701信箱. 低轨道磁化等离子体中运动航天器等离子体鞘层特性[J]. 地球物理学报,2000,43(4):459-463.
APA 曹晋滨,汪学毅,&北京8701信箱.(2000).低轨道磁化等离子体中运动航天器等离子体鞘层特性.地球物理学报,43(4),459-463.
MLA 曹晋滨,et al."低轨道磁化等离子体中运动航天器等离子体鞘层特性".地球物理学报 43.4(2000):459-463.
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