A corrector for spacecraft calculated electron moments

Details A corrector for spacecraft calculated electron moments A corrector for spacecraft calculated electron moments

Mar 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005angeo..23..931g&link_type=abstract

Annales Geophysicae, vol. 23, Issue 3, pp.931-943

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Scientific paper

We present the application of a numerical method to correct electron moments calculated on-board spacecraft from the effects of potential broadening and energy range truncation. Assuming a shape for the natural distribution of the ambient plasma and employing the scalar approximation, the on-board moments can be represented as non-linear integral functions of the underlying distribution. We have implemented an algorithm which inverts this system successfully over a wide range of parameters for an assumed underlying drifting Maxwellian distribution. The outputs of the solver are the corrected electron plasma temperature Te, density Ne and velocity vector Ve. We also make an estimation of the temperature anisotropy A of the distribution. We present corrected moment data from Cluster's PEACE experiment for a range of plasma environments and make comparisons with electron and ion data from other Cluster instruments, as well as the equivalent ground-based calculations using full 3-D distribution PEACE telemetry.

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