Observations of triboelectric charging effects on Langmuir-type probes in dusty plasma

Details Observations of triboelectric charging effects on Langmuir-type probes in dusty plasma Observations of triboelectric charging effects on Langmuir-type probes in dusty plasma

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jgra..11110302b&link_type=abstract

Journal of Geophysical Research, Volume 111, Issue A10, CiteID A10302

Physics

Plasma Physics

5

Space Plasma Physics: Spacecraft/Atmosphere Interactions, Space Plasma Physics: Spacecraft Sheaths, Wakes, Charging, Space Plasma Physics: Instruments And Techniques, Ionosphere: Instruments And Techniques, Ionosphere: Plasma Interactions With Dust And Aerosols (7849)

Scientific paper

Investigation of Earth's mesosphere using sounding rockets equipped with a myriad of instruments has been a highly active field in the last 2 decades. This paper presents data from three separate instruments: an RF impedance probe, a DC fixed bias Langmuir probe, and an electric field probe, that were flown on a mesospheric sounding rocket flight investigating the presence of charged dust within and/or around a sporadic metal layer. The combined data set indicates a case of payload surface charging, the causes of which are investigated within this paper. A generic circuit model is developed to analyze payload charging and behavior of Langmuir-type instruments. The application of this model to the rocket payload indicates that the anomalous charging event was an outcome of triboelectrification of the payload surface from neutral dust particles present in the Earth's mesosphere. These results suggest caution in interpreting observations from the Langmuir class of instrumentation within dusty environments.

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