Physics
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jatp...48...79a&link_type=abstract
Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 48, Jan. 1986, p. 79-82.
Physics
2
Auroral Zones, E Region, Electron Scattering, Ionospheric Electron Density, Plasma-Particle Interactions, Collision Rates, Electron Energy, Frequencies, Ionospheric Heating
Scientific paper
It is known that the auroral E-region becomes turbulent when the ionospheric electric field is sufficiently strong such that small scale plasma waves can scatter electrons. The effective electron scattering frequency nu(ef) is a sum of the collision frequency with neutral particles nu(en) and the wave-induced collision frequency. It is supposed that in the auroral E-region nu(ef) may significantly exceed nu(en). This can explain the following three experimental results: unusually high electron temperature of 1200 K in the E-region; increase of riometer absorption without an electron density enhancement; a very strong signal demodulated in the ionosphere heated by a powerful radiowave. These results make it possible to estimate nu(ef), which appears to be of the order of 200,000/sec.
Arykov A. A.
Maltsev Iu. P.
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