NSSC OpenIR  > 空间科学部
PARTICLE-PRECIPITATION FROM THE MAGNETOTAIL DURING SUBSTORMS
Xu, R. L.; Zhu, M.; 北京8701信箱
Department太阳系探测联合研究中心
Source PublicationScience in China Series a-Mathematics Physics Astronomy & Technological Sciences
1995
Volume38Issue:1Pages:92-106
ISSN1001-6511
Language英语
KeywordMagnetotail Single Particle Precipitation Substorm Magnetic-field Plasma Sheet Dynamics Orbits
AbstractThe dynamics of particles in the magnetosphere during a substorm has been studied. The electromagnetic field of the magnetotail is assumed to be a dawn-dusk electric field and a two-dimensional neutral sheet magnetic field with B-z, where B-z varies with the distance from the earth. The numerical trajectories of the particles show that there is a non-adiabatic region near the equatorial plane, which is determined by delta=\(p .del)B\/B>0.1 (p is the Larmor radius). The vanishing of the invariant mu leads to a pitch angle scattering. After a long time of scattering, most of the pitch angles of the particles become small enough for the particles to precipitate into the ionosphere. With the Tsyganenko model, the magnetosphere might be divided into 6 regions: the closed adiabatic region, the open adiabatic region, the nonadiabatic region near the equatorial plane of the near magnetotail, the nonadiabatic region in the cusp, the neutral sheet adiabatic region and the precipitation region. The precipitation region links the non-adiabatic regions with the aurora oval, which shows that the non-adiabatic region is one of the main sources of particle precipitation during substorms.
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/122/1551
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Xu, R. L.,Zhu, M.,北京8701信箱. PARTICLE-PRECIPITATION FROM THE MAGNETOTAIL DURING SUBSTORMS[J]. Science in China Series a-Mathematics Physics Astronomy & Technological Sciences,1995,38(1):92-106.
APA Xu, R. L.,Zhu, M.,&北京8701信箱.(1995).PARTICLE-PRECIPITATION FROM THE MAGNETOTAIL DURING SUBSTORMS.Science in China Series a-Mathematics Physics Astronomy & Technological Sciences,38(1),92-106.
MLA Xu, R. L.,et al."PARTICLE-PRECIPITATION FROM THE MAGNETOTAIL DURING SUBSTORMS".Science in China Series a-Mathematics Physics Astronomy & Technological Sciences 38.1(1995):92-106.
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