CLUSTER - RAPID measurements of high energy electron gradients in the Earth's magnetotail

Details CLUSTER - RAPID measurements of high energy electron gradients in the Earth's magnetotail CLUSTER - RAPID measurements of high energy electron gradients in the Earth's magnetotail

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm72a0600t&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SM72A-0600

Other

2716 Energetic Particles, Precipitating, 2744 Magnetotail, 2788 Storms And Substorms, 7807 Charged Particle Motion And Acceleration, 7867 Wave/Particle Interactions

Scientific paper

During the months of June through to November, 2001, the apogee of the CLUSTER spacecraft passed through the Earth's magnetotail, at a distance of around 20 RE, with an average spacecraft separation of about 1200 km. Using the IES (Imaging Electron Spectrometer) from the RAPID (Research with Adaptive Particle Imaging Detectors) instruments, we present measurements of the energetic electron plasma distribution in the the vicinity of the neutral sheet. Electrons in the RAPID energy range (20-200 keV) are a possible source population for relativistic electrons in the inner magnetosphere, which commonly increase during the recovery phase of magnetic storms. Using magnetic field measurements from the FGM (Flux Gate Magnetometer) instrument we order the electron data in phase space density (PSD) and determine the "instantaneous" PSD gradient in the neutral sheet for each crossing. By combining these CLUSTER gradient observations in the mid-tail region, with LANL geosynchronous (GEO) relativistic electron observations, we wish to test whether there are sufficient PSD gradients between GEO and CLUSTER to explain the observed inner magnetospheric electron dynamics in terms of radial transport alone, or whether one needs to invoke other more localized acceleration processes.

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