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Titel Dusty space plasma diagnosis using temporal behavior of polar mesospheric summer echoes during active modification
VerfasserIn A. Mahmoudian, W. A. Scales, M. J. Kosch, A. Senior, M. Rietveld
Medientyp Artikel
Sprache Englisch
ISSN 0992-7689
Digitales Dokument URL
Erschienen In: Annales Geophysicae ; 29, no. 11 ; Nr. 29, no. 11 (2011-11-29), S.2169-2179
Datensatznummer 250017134
Publikation (Nr.) Volltext-Dokument vorhandencopernicus.org/angeo-29-2169-2011.pdf
 
Zusammenfassung
The objective of this paper is to study the effect of different plasma and dust parameters on Polar Mesospheric Summer Echoes (PMSE) temporal behavior after turn-on and turn-off of radio wave heating and to use these responses to diagnose the properties of the dust layer. The threshold radar frequency and dust parameters for the enhancement or suppression of radar echoes after radio wave heating turn-on are investigated for measured mesospheric plasma parameters. The effect of parameters such as the electron temperature enhancement during heating, dust density, dust charge polarity, ion-neutral collision frequency, electron density and dust radius on the temporal evolution of electron irregularities associated with PMSE are investigated. The possible diagnostic information for various charged dust and background plasma quantities using the temporal behavior of backscattered radar power in active experiments is discussed. The computational results are used to make predictions for PMSE active modification experiments at 7.9, 56, 139, 224 and 930 MHz corresponding to existing radar facilities. Data from a 2009 VHF (224 MHz) experiment at EISCAT is compared with the computational model to obtain dust parameters in the PMSE.
 
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