Thermal He(+) in the plasmasphere - Comparison of observations with numerical calculations

Details Thermal He(+) in the plasmasphere - Comparison of observations with numerical calculations Thermal He(+) in the plasmasphere - Comparison of observations with numerical calculations

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....9415265n&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Nov. 1, 1989, p. 15265-15276.

Physics

45

Atmospheric Ionization, Helium Ions, Hydrogen Ions, Mass Spectrometers, Plasmasphere, Satellite Observation, Earth Atmosphere, Ion Temperature, Satellite-Borne Instruments

Scientific paper

Observations made by the retarding ion mass spectrometer on the Dynamics Explorer-1 satellite are used to study the relationship between He(+) and H(+). The observations are compared to theoretical values obtained using the field line interhemispheric plasma model (Richards and Torr, 1988). The observations are presented in the form of statistical L shell distributions and density versus L shell profiles. To obtain agreement between the measured and predicted ion temperature, it must be assumed that approximaterly 55 pct of the energy of the ionospheric photoelectron escape flux is deposited in the plasmasphere.

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