 |
| Titel |
Proton-electron precipitation effects on the electron production and density above EISCAT (Tromsø) and ESR |
| VerfasserIn |
J. Lilensten  , M. Galand |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 16, no. 10 ; Nr. 16, no. 10, S.1299-1307 |
| Datensatznummer |
250013498
|
| Publikation (Nr.) |
 copernicus.org/angeo-16-1299-1998.pdf |
|
|
|
|
|
| Zusammenfassung |
The suprathermal particles, electrons and
protons, coming from the Sun and precipitating into the high-latitude atmosphere
are an energy source for the Earth's ionosphere. They interact with the ambient
thermal gas through inelastic and elastic collisions. Most of the physical
quantities perturbed by the precipitation, such as the electron production rate,
may be evaluated by solving the stationary Boltzmann transport equation, which
yields the particle fluxes as a function of altitude, energy, and pitch angle.
This equation has been solved for the three different suprathermal species
(electrons, protons and hydrogen atoms). We first compare the results of our
theoretical code to a coordinated DMSP/EISCAT experiment, and to another
approach. Then, we show the effects that pure proton precipitation may have on
the ionosphere, through primary and secondary ionization. Finally, we compare
the effects of proton precipitation and electron precipitation in some selected
cases above EISCAT (Tromsø) and ESR.
Key words. Ionosphere (auroral ionosphere;
ionosphere-magnetosphere interactions; particle precipitation). |
| |
|
| Teil von |
|
|
|
|
|
|
|
|