NSSC OpenIR  > 空间科学部
Active spacecraft potential control
Riedler, W.; Torkar, K.; Rudenauer, F.; Fehringer, M.; Pedersen, A.; Schmidt, R.; Grard, R. J. L.; Arends, H.; Narheim, B. T.; Troim, J.; Torbert, R.; Olsen, R. C.; Whipple, E.; Goldstein, R.; Valavanoglou, N.; Zhao, H.; 北京8701信箱
Department太阳系探测联合研究中心
Source PublicationSpace Science Reviews
1997
Volume79Issue:40180Pages:271-302
ISSN0038-6308
Language英语
KeywordMetal Ion-source Plasma Photoemission Instability Cyclotron Emission Density
AbstractCharging of the outer surface or of the entire structure of a spacecraft in orbit can have a severe impact on the scientific output of the instruments. Typical floating potentials for magnetospheric satellites (from +1 to several tens of volts in sunlight) make it practically impossible to measure the cold (several eV) component of the ambient plasma. Effects of spacecraft charging are reduced by an entirely conductive surface of the spacecraft and by active charge neutralisation, which in the case of Cluster only deals with a positive potential. The Cluster spacecraft are instrumented with ion emitters of the liquid-metal ion-source type, which will produce indium ions at 5 to 8 keV energy. The operating principle is field evaporation of indium in the apex field of a needle. The advantages are low power consumption, compactness and high mass efficiency. The ion current will be adjusted in a feedback loop with instruments measuring the spacecraft potential (EFW and PEACE). A stand alone mode is also foreseen as a back-up. The design and principles of the operation of the active spacecraft potential control instrument (ASPOC) are presented in detail. Flight experience with a similar instrument on the Geotail spacecraft is outlined.
Indexed BySCI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1554
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Riedler, W.,Torkar, K.,Rudenauer, F.,et al. Active spacecraft potential control[J]. Space Science Reviews,1997,79(40180):271-302.
APA Riedler, W..,Torkar, K..,Rudenauer, F..,Fehringer, M..,Pedersen, A..,...&北京8701信箱.(1997).Active spacecraft potential control.Space Science Reviews,79(40180),271-302.
MLA Riedler, W.,et al."Active spacecraft potential control".Space Science Reviews 79.40180(1997):271-302.
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