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    Rights statement: An edited version of this paper was published by AGU. Copyright 2018 American Geophysical Union. Mahmoudian, A., Senior, A., Scales, W. A., Kosch, M. J., & Rietveld, M. T. (2018). Dusty space plasma diagnosis using the behavior of polar mesospheric summer echoes during electron precipitation events. Journal of Geophysical Research: Space Physics, 123, 7697–7709. https://doi.org/10.1029/2018JA025395

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Dusty Space Plasma Diagnosis Using the Behavior of Polar Mesospheric Summer Echoes During Electron Precipitation Events

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<mark>Journal publication date</mark>09/2018
<mark>Journal</mark>Journal of Geophysical Research: Space Physics
Issue number9
Volume123
Number of pages13
Pages (from-to)7697-7709
Publication StatusPublished
Early online date22/08/18
<mark>Original language</mark>English

Abstract

The behavior of polar mesospheric summer echoes (PMSEs) during an electron precipitation event is investigated by including dusty plasma effects for the first time. The observational data recorded with the very high frequency (224 MHz) and ultrahigh frequency (930 MHz) radars at the European Incoherent SCATter Scientific Association on 10 and 11 July 2012 are presented. The observed radar echoes show that the PMSEs are both correlated and anticorrelated with the increased electron density associated with electron precipitation events on the two consecutive days. The experimental observations are compared with numerical simulations of the temporal evolution of PMSE with different background dusty plasma parameters during the electron precipitation event. Specifically, the effect of dust radius, dust density, recombination/photoionization rates, photo-detachment current, and electron density enhancement ratio on the behavior of a PMSE layer and the associated dust charging process in the course of electron precipitation events is studied. It is observed that the ratio of electron density fluctuation amplitude δne to the plasma density (ne) plays a critical role in the appearance/disappearance of the layer. The simulation results revealed that the existence of PMSE is mainly determined by dust radius and dust density. The dusty plasma parameters associated with each event are estimated. The condensation nuclei of the ice particles such as proton hydrate clusters (H+(H2O)n) or meteoric smoke particles can be determined by employing the microphysical models along with the dusty plasma simulations. This can resolve any discrepancy in the description of the observed phenomena. ©2018. American Geophysical Union. All Rights Reserved.

Bibliographic note

An edited version of this paper was published by AGU. Copyright 2018 American Geophysical Union. Mahmoudian, A., Senior, A., Scales, W. A., Kosch, M. J., & Rietveld, M. T. (2018). Dusty space plasma diagnosis using the behavior of polar mesospheric summer echoes during electron precipitation events. Journal of Geophysical Research: Space Physics, 123, 7697–7709. https://doi.org/10.1029/2018JA025395