Physics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm21b10m&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SM21B-10
Physics
2764 Plasma Sheet
Scientific paper
The CLUSTER spacecraft crossed the night side plasma sheet several times, during the commissioning phase. The CIS instrument measured ion distribution functions of the major species, H+, He++, He+ and O+ over the energy range 5 eV - 40 keV for all ions, and 20 eV - 40 keV for ion composition. During these passes the spacecraft were at XGSE ~20 Re and the local time was at ~23 - ~22 MLT. The magnetospheric conditions varied from quiet to moderately disturbed. We present CIS observations of the Central Plasma Sheet (CPS) and the Plasma Sheet Boundary Layer (PSBL) as observed by two spacecraft (3 and 4). At the boundary of these regions two types of ion populations were observed. Earthward ion flows at energies 1 keV - 10 keV and low energy (< ~100 eV) field aligned ions coming from the Earth. O+ ions appear predominately as field aligned tailward beams. The composition and directional information will be used to infer the source of the CPS and PSBL plasma.
Balogh André
Balsiger Hans
Bavassano-Cattaneo M.
Bosqued Jean Michel
Carlson Carl
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