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The ionospheric up-flowing He+ ion distribution in the magnetosphere
Shi, J. K.; Guo, J. G.; Torkar, K.; Liu, Z. X.; 北京8701信箱
Department空间天气学国家重点实验室
Source PublicationJournal of Atmospheric and Solar-Terrestrial Physics
2009
Volume71Issue:16Pages:1630-1635
ISSN1364-6826
Language英语
KeywordIonosphere Up-flowing He++ Ions Inner Magnetosphere Distribution Satellite-observations Acceleration Magnetotail Mechanism Plasma Model
AbstractBased on ion distribution function found from the dynamic equation, the density distribution of He+ ions originating from the polar ionosphere and up-flowing along the magnetic field line is studied during quiet and weakly disturbed geomagnetic conditions, The results show the following. (1) The ionospheric up-flowing He+ ions mainly reside in the inner magnetosphere and their density has a negative radial gradient. (2) The ionospheric up-flowing He+ ion distributions along the magnetic field line are mainly controlled by gravity and the geomagnetic field configuration. Larger the gravity, larger is the ion density. Smaller the intensity of magnetic field, smaller is the ion density. (3) If the geomagnetic activity index K-p is high, more up-flowing He+ ions will enter the magnetosphere and the region where the up-flowing ions are dominant will grow. This is consistent with observations of ionospheric up-flowing ions. Some features of the geopause can be understood based on our theoretical results.
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/122/1131
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Shi, J. K.,Guo, J. G.,Torkar, K.,et al. The ionospheric up-flowing He+ ion distribution in the magnetosphere[J]. Journal of Atmospheric and Solar-Terrestrial Physics,2009,71(16):1630-1635.
APA Shi, J. K.,Guo, J. G.,Torkar, K.,Liu, Z. X.,&北京8701信箱.(2009).The ionospheric up-flowing He+ ion distribution in the magnetosphere.Journal of Atmospheric and Solar-Terrestrial Physics,71(16),1630-1635.
MLA Shi, J. K.,et al."The ionospheric up-flowing He+ ion distribution in the magnetosphere".Journal of Atmospheric and Solar-Terrestrial Physics 71.16(2009):1630-1635.
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