Physics
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985georl..12..847k&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 12, Dec. 1985, p. 847-850.
Physics
18
Carbon, Ion Sources, Magnetospheric Ion Density, Oxygen Ions, Solar Terrestrial Interactions, Ampte (Satellites), Solar Wind
Scientific paper
Observations of charge state distributions of oxygen and carbon are presented that were obtained with the charge-energy-mass spectrometer onboard the AMPTE/CCE spacecraft. Data were selected for two different local time sectors (apogee at 1300 LT and 0300 LT, respectively), three L-ranges (4-6, 6-8, and greater than 8), and quiet to moderately disturbed days (Kp less than or equal to 4). The charge state distributions reveal the existence of all charge states of oxygen and carbon in the magnetosphere. The relative importance of the different charge states strongly depends on L and much less on local time. The observations confirm that the solar wind and the ionosphere contribute to the oxygen population, whereas carbon only originates from the solar wind. The L-dependence of the charge state distributions can be interpreted in terms of these different ion sources and of charge exchange and diffusion processes that largely influence the distribution of oxygen and carbon in the magnetosphere.
Gloeckler George
Hamilton Douglas C.
Kremser Gerhard
Stuedemann W.
Wilken Berend
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