Possible effect of hyperthermal electrons on the charging of mesospheric dust

Details Possible effect of hyperthermal electrons on the charging of mesospheric dust Possible effect of hyperthermal electrons on the charging of mesospheric dust

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012jastp..74..124r&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 74, p. 124-128.

Physics

Scientific paper

It is generally assumed that negatively charged icy dust particles in the mesosphere are charged by the collection of thermal plasma particles. However, there are some indications that there may be a population of hyperthermal electrons in the D-region under auroral activity under certain conditions (e.g. Margot-Chaker and McNamara, Planetary and Space Science 32, 391, 1984). In this brief communication, we speculate on the effect of a hyperthermal distribution of electrons on dust charging, and how this might affect prevailing turbulence scattering theory for polar summer mesophere echoes.

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