Abstract We have developed a large scale, plasma transport model which treats ions as particles and electrons as a massless neutralizing fluid. In using this model to study plasmaspheric flows we have included the effects of ion Coulomb collisions, pitch angle scattering, and wave-induced perpendicular heating. We have also include electron heating. Among the results we find: (1) Coulomb collisions are sufficient for plasmasphere refilling within observed time scales, (2) Counterstreaming beams can last up to 30 hours for an L = 4.5 flux tube, provided there is not much wave-particle heating or scattering occurring, (3) At early times, pitch angle scattering and perpendicular heating acting together are much more effective than either acting alone in producing plasma accumulation, (4) Heating power levels as low as 10−13 V2m−2Hz−1 can result in equatorial densities of 10 cm−3 in 12 hours for an L = 4 flux tube, and (5) Equatorial electron heating can create electric potential barriers which will tend to isolate equatorially trapped ions and decouple interhemispheric flow, provided the electron heat flow is not too large. Results from cases with perpendicular ion heating and parallel electron heating are similar to what is seen in the DE RIMS ion observations.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Semikinetic modeling of plasma flow on outer plasmaspheric field lines


    Beteiligte:
    Wilson, G.R. (Autor:in) / Horwitz, J.L. (Autor:in) / Lin, J. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 13 , 4 ; 107-116


    Erscheinungsdatum :

    01.01.1993


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Models of the plasmaspheric thermal plasma distribution

    Richards, P.G. / Torr, D.G. / Horwitz, J.L. et al. | Elsevier | 1987


    Models of the plasmaspheric thermal plasma distribution

    Richards, P. G. / Torr, D. G. / Horwitz, J. L. et al. | NTRS | 1986


    Field-aligned plasmaspheric flows at moderate latitudes

    Moffett, R.J. / Bailey, G.J. / Simmons, P.A. | Elsevier | 1987



    Plasmaspheric plumes: Cluster, IMAGE and simulations

    Darrouzet, F. / De Keyser, J. / Decreau, P. M. E. et al. | British Library Conference Proceedings | 2006