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Effects of convection electric field on upwelling and escape of ionospheric o(+)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Peterson, William K. Chiu, Yam T. Cladis, J. B. |
| Copyright Year | 1992 |
| Description | A Monte Carlo code is used to explore the full effects of the convection electric field on distributions of upflowing O(+) ions from the cusp/cleft ionosphere. Trajectories of individual ions/neutrals are computed as they undergo multiple charge-exchange collisions. In the ion state, the trajectories are computed in realistic models of the magnetic field and the convection, corotation, and ambipolar electric fields. The effects of ion-ion collisions are included, and the trajectories are computed with and without simultaneous stochastic heating perpendicular to the magnetic field by a realistic model of broadband, low frequency waves. In the neutral state, ballistic trajectories in the gravitational field are computed. The initial conditions of the ions, in addition to ambipolar electric field and the number densities and temperatures of O(+), H(+), and electrons as a function of height in the cusp/cleft region were obtained from the results of Gombosi and Killeen (1987), who used a hydrodynamic code to simulate the time-dependent frictional-heating effects in a magnetic tube during its motion though the convection throat. The distribution of the ion fluxes as a function of height are constructed from the case histories. |
| File Size | 1298657 |
| Page Count | 26 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930007650 |
| Archival Resource Key | ark:/13960/t25b51c4h |
| Language | English |
| Publisher Date | 1992-08-07 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Oxygen Stochastic Processes Gravitational Fields Hydrodynamics Trajectories Ionic Collisions Monte Carlo Method Convection Time Dependence Corotation Earth Ionosphere Magnetic Fields Electric Fields Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
