Transport of ions injected by AMPTE magnetotail releases

Details Transport of ions injected by AMPTE magnetotail releases Transport of ions injected by AMPTE magnetotail releases

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.5497c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, May 1, 1989, p. 5497-5504. Research supported by Lockheed Missiles an

Physics

8

Ampte (Satellites), Barium Ion Clouds, Geomagnetic Tail, Transport Properties, Earth Magnetosphere, Electric Fields, Lithium, Particle Trajectories

Scientific paper

The BA and Li ions released in the magnetotail by the AMPTE IRM satellite were not observed in the inner magnetosphere with the AMPTE CCE satellite. In an effort to understand these results, Cladis and Francis (1988) modeled the expansion and ionization of the released atoms and computed several hundred guiding-center trajectories of the ions to sample the motion of each ion cloud. Here, the transport calculations are improved, principally by computing the full gyration motion of the ions in a more realistic model of the geomagnetic tail. The results indicate that the Ba(+) ions were convected inward along a narrow corridor, which was at least 2 earth radii away from the satellite in the case of the first Ba release and at least 3 earth radii away in the case of the second Ba release. Even if the ions had reached the satellite, their energies would have been too low to be detected. The Li(+) ions from both releases drifted inward over broad regions which overlapped the satellite in space and time. However, their fluxes at the satellite were somewhat too low to be detected.

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