Coordinated measurements of slot region electron precipitation by plasmaspheric wave bands

Details Coordinated measurements of slot region electron precipitation by plasmaspheric wave bands Coordinated measurements of slot region electron precipitation by plasmaspheric wave bands

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.4418i&link_type=abstract

Journal of Geophysical Research, vol. 87, June 1, 1982, p. 4418-4426. Research sponsored by the Lockheed Independent Research P

Physics

13

Atmospheric Physics, Electron Precipitation, Plasma Waves, Plasmasphere, Radiation Belts, Cyclotron Resonance, Electron Flux Density, Energy Spectra, Frequency Distribution, Hiss, International Sun Earth Explorer 1, Plasma Density, Whistlers

Scientific paper

Simultaneous measurements have been made of slot region precipitating electron spectra, wave frequency distributions and plasma density profiles using the P78-1 low altitude satellite and ISEE 1 spacecraft. Broad bands are often observed in the electron energy spectra with a well-defined low energy cutoff which decreases in energy with increasing L value. This is consistent with calculations for first-order cyclotron resonance with waves at the high frequency cutoff of the band. On the basis of electron spectra and plasma densities observed from upper hybrid resonance frequencies, hiss cutoff frequencies are calculated for an assumed first-order cyclotron resonance interaction and compared with wave spectral density profiles. Plasma wave and electron measurements are generally consistent, supporting the precipitation mechanism hypothesis.

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