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| Titel |
First results from the RAPID imaging energetic particle spectrometer on board Cluster |
| VerfasserIn |
B. Wilken, P. W. Daly, U. Mall, K. Aarsnes, D. N. Baker, R. D. Belian, J. B. Blake, H. Borg, J. Büchner, M. Carter, J. F. Fennell, R. Friedel, T. A. Fritz, F. Gliem, M. Grandé, K. Kecskemety, G. Kettmann, A. Korth, S. Livi, S. McKenna-Lawlor, K. Mursula, B. Nikutowski, C. H. Perry, Z. Y. Pu, J. Roeder, G. D. Reeves, E. T. Sarris, I. Sandahl, F. Søraas, J. Woch, Q.-G. Zong |
| 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 ; 19, no. 10/12 ; Nr. 19, no. 10/12, S.1355-1366 |
| Datensatznummer |
250014119
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| Publikation (Nr.) |
 copernicus.org/angeo-19-1355-2001.pdf |
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| Zusammenfassung |
The advanced energetic
particle spectrometer RAPID on board Cluster can provide a complete description
of the relevant particle parameters velocity, V , and atomic mass, A, over an
energy range from 30 keV up to 1.5 MeV. We present the first measurements taken
by RAPID during the commissioning and the early operating phases. The orbit on
14 January 2001, when Cluster was travelling from a perigee near dawn northward
across the pole towards an apogee in the solar wind, is used to demonstrate the
capabilities of RAPID in investigating a wide variety of particle populations.
RAPID, with its unique capability of measuring the complete angular
distribution of energetic particles, allows for the simultaneous measurements
of local density gradients, as reflected in the anisotropies of 90° particles
and the remote sensing of changes in the distant field line topology, as
manifested in the variations of loss cone properties. A detailed discussion of
angle-angle plots shows considerable differences in the structure of the
boundaries between the open and closed field lines on the nightside fraction of
the pass and the magnetopause crossing. The 3 March 2001 encounter of Cluster
with an FTE just outside the magnetosphere is used to show the first structural
plasma investigations of an FTE by energetic multi-spacecraft observations.
Key words. Magnetospheric physics
(energetic particles, trapped; magnetopause, cusp and boundary layers;
magnetosheath) |
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