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- W2004028116 abstract "A numerical model for the magnetosphere is used to investigate possible mechanisms for the injection of low-energy protons into the magnetosphere. The proton distribution function is assumed to consist of two monoenergetic components. The effects of day-night asymmetries in the geomagnetic field, the earth's rotation, and a finitely conducting ionosphere are included in the model. The model was used to determine if one group of particles could result in the injection of another group of particles. The calculations indicated that coupling between particles of different energies would be ineffective in injecting particles. Another numerical experiment sought to determine the effect of the internal polarization fields of the injected particles on particle injection by an externally imposed convection electric field. It was found that the external field tended to be canceled out by the internally generated field. The calculations indicate that an external convection field is unlikely to result in the injection of significant particles deep within the magetosphere unless the effective ionospheric conductivity is very high, as might exist in an ionosphere bombarded by auroral ionization. Another experiment was used to investigate the effect of the earth's rotation and the asymmetric geomagnetic field in causing injection. It was found that significant injection of 80-ev/γ particles occurred on a time scale of a day without any assist from external electric fields. It is pointed out that much faster and deeper injection may occur if a self-consistent model of the geomagnetic field were used in the calculations. A mechanism of this type would also require the existence of a highly conductive ionosphere. A final numerical experiment suggests that certain features of the auroral substorm could result from rapid changes in the effective ionospheric conductivity." @default.
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- W2004028116 date "1971-04-01" @default.
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- W2004028116 title "Possible mechanisms for formation of the ring current belt" @default.
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