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| Titel |
First results from the hot plasma instrument PROMICS-3 on Interball-2 |
| VerfasserIn |
I. Sandahl, S. Barabash, H. Borg, E. Y. Budnik, E. M. Dubinin, U. Eklund, H. Koskinen, K. Lundin, R. Lundin, A. Mälkki, R. Pellinen, N. F. Pissarenko, T. Pulkkinen, A. V. Zakharov |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 17, no. 5 ; Nr. 17, no. 5, S.659-673 |
| Datensatznummer |
250013748
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| Publikation (Nr.) |
 copernicus.org/angeo-17-659-1999.pdf |
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| Zusammenfassung |
The PROMICS-3 instrument on Interball-2 is
nominally identical to the PROMICS-3 instrument on Interball-1. It performs
three-dimensional measurements of ions in the energy range 4 eV-70 keV with mass
separation and of electrons in the energy range 300 eV-35 keV. Interball-2 was
launched on August 29, 1996, into an orbit with the same inclination as that of
Interball-1, 63°, but with apogee at 20 000 km. In this study the
PROMICS-3 instrument on Interball-2 is briefly described and examples of the
first results are presented. Firstly, we report observations of upward moving
molecular ions with energies of up to 700 eV at the poleward edge of the auroral
oval. Previous observations of outflowing molecular ions have been at lower
altitudes and lower energies. Secondly, we show observations of dawnside
magnetosheath plasma injections. Using conjugate data from both PROMICS-3
instruments we have found dispersion structures above the morningside auroral
oval, which occurred simultaneously with isolated "pockets" of
magnetosheath plasma at a distance of XGSM=-14 to -12 RE,
which had been injected into the inner part of the low-latitude boundary layer.
These isolated plasma structures were sites of strong field-aligned currents and
are proposed to be the magnetospheric counterparts of the dispersion structures.
Key words. Magnetospheric physics (auroral phenomena;
magnetotail boundary layers; instruments and techniques). |
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