Computer Science
Scientific paper
Nov 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998sct..conf..153v&link_type=abstract
Proceedings of the 6th Spacecraft Charging Conference. November 2-6, 1998. AFRL Science Center, Hanscom AFB, MA, USA., p.153-156
Computer Science
Scientific paper
In this paper we present an analysis of the I-V characteristics measured during the TSS-1R mission. The results strongly indicate that the electron current collection by the satellite at high potential is dominated by the space charge effects. The experimental data are compared with the characteristic predicted by a new model that considers both the space charge and the effect of the magnetic field on the attracted particles. The theoretical model provides a normalized current-voltage curve with a functional dependence in good agreement with the TSS-1R data. In particular the best agreement is obtained by applying an enhancing factor of 2.7 to the electron thermal current density. Such enhancement is likely due to effects associated to the relative velocity between the satellite and the ionospheric plasma.
de Venuto F.
Dobrowolny Marino
Iess Luciano
Vannaroni Giuliano
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