Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm51b0525s&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SM51B-0525
Physics
2467 Plasma Temperature And Density, 2494 Instruments And Techniques
Scientific paper
Langmuir probes are used on rockets and satellites to measure electron and ion densities and electron temperatures in the ionosphere. Typical output of this instrument is a current-voltage characteristic which further analysis alows to determine basic plasma parameters, namely the plasma density of electrons and protons, electron temerature and the plasma potential with respect to the spacecraft. A segmented Langmuir probe will be onboard the CNES spacecraft DEMETER alowing measurements of Current-Voltage characteristics with rate 1sec. In this paper we present a description of the method alowing automated numerical processing of the current-voltage characteristics and we compare several methods used for the analysis of the I-V curves to determine the basic parameters of the plasma environment. We discuss their applicability and precission to given cases of real measurements performed by the instrument in the plasma chamber.
Hellinger Petr
Lebreton Jeremy
Parrot Michel
Stepan S.
Travnicek Pavel
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