Stimulated auroral precipitation by wave-particle interactions - Implications for the CRRES satellite mission

Details Stimulated auroral precipitation by wave-particle interactions - Implications for the CRRES satellite mission Stimulated auroral precipitation by wave-particle interactions - Implications for the CRRES satellite mission

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9611403s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, July 1, 1991, p. 11,403-11,419.

Physics

3

Auroral Electrojets, Particle Precipitation, Plasma-Particle Interactions, Radiation Belts, Satellite Observation, Space Plasmas

Scientific paper

Electromagnetic electron cyclotron wave excitation and amplification have been studied for conditions expected to arise inside the cold plasma cloud that will be formed as a result of the lithium release planned for the Stimulated Electron Precipitation (STEP) experiment to be carried out during the Combined Release and Radiation Effects Satellite (CRRES) mission. The results show that for a background thermal T(e) anisotropy of over 1.2, whistler wave growth rates are greatly increased by the presence of the cold electrons, and the waves can be trapped in the cloud. Because of the maserlike effect, intense standing waves with amplitudes of the order of a few nanotesla will be generated within a frequency range of about 50-500 Hz. The waves will reach their largest amplitudes about 20 s after release, causing strong electron pitch angle diffusion into the loss cone, which can be detected as enhanced diffuse aurora at earth.

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