Mass composition of substorm-related energetic ion dispersion events

Details Mass composition of substorm-related energetic ion dispersion events Mass composition of substorm-related energetic ion dispersion events

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.2057s&link_type=abstract

Journal of Geophysical Research, vol. 88, Mar. 1, 1983, p. 2057-2064.

Computer Science

Sound

12

Ion Motion, Magnetic Storms, Mass Spectroscopy, Satellite Sounding, Hydrogen Ions, Oxygen Ions, Positive Ions, Protons, Scatha Satellite, Temporal Distribution

Scientific paper

The mass dependent characteristics in two ion dispersion events is studied using data obtained by an ion mass spectrometer flown onboard the SCATHA (P78-2) spacecraft. It is found that the dispersion events are associated with substorm activity and that the dispersing ions originated in the dusk-midnight sector near the time of substorm onset. The question of the source of the dispersing plasma is examined since the mass spectrometer can discriminate between protons and oxygen. It is shown that a local injection of ionosphere plasma near the time of substorm onset can explain some of the signatures in the energetic ion spectra for different masses.

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