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Motions of charged particles in the magnetosphere under the influence of a time-varying large scale convection electric fieldThe motions of charged particles under the influence of the geomagnetic and electric fields are quite complex in the region of the inner magnetosphere. The Volland-Stern type large-scale convection electric field with gamma = 2 has been used successfully to predict both the plasmapause location and particle enhancements determined from Explorer 45 (S3-A) measurements. Recently introduced into the trajectory calculations of Ejiri et al. (1978) is a time dependence in this electric field based on the variation in Kp for actual magnetic storm conditions. The particle trajectories are computed as they change in this time-varying electric field. Several storm fronts of particles of different magnetic moments are allowed to be injected into the inner magnetosphere from L = 10 in the equatorial plane. The motions of these fronts are presented in a movie format. The local time of injection, the particle magnetic moments and the subsequent temporal history of the magnetospheric electric field play important roles in determining whether the injected particles are trapped within the ring current region or whether they are convected to regions outside the inner magnetosphere.
Document ID
19800031788
Acquisition Source
Legacy CDMS
Document Type
Other - Collected Works
Authors
Smith, P. H.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hoffman, R. A.
(NASA Goddard Space Flight Center Laboratory for Planetary Atmospheres, Greenbelt, Md., United States)
Bewtra, N. K.
(Computer Sciences Corp. Silver Spring, Md., United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1979
Subject Category
Geophysics
Accession Number
80A15958
Distribution Limits
Public
Copyright
Other

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