Browsing by Author "Svenes, Knut Ragnar"
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Active spacecraft potential control investigation
Torkar, K.; Nakamura, R.; Tajmar, Martin; Scharlemann, C.; Jeszensky, H.; Laky, G.; Fremuth, G.; Escoubet, C. P.; Svenes, Knut Ragnar (2014)In tenuous plasma the floating potential of sunlit spacecraft reaches tens of volts, positive. The corresponding field disturbs measurements of the ambient plasma by electron and ion sensors and can reduce micro-channel ... -
Estimating the capture and loss of cold plasma from ionospheric outflow
Haaland, Stein; Eriksson, Anders; Engwall, Erik; Lybekk, Bjørn; Nilsson, Hans; Pedersen, Arne; Svenes, Knut Ragnar; André, Mats; Förster, Matthias; Li, K.; Johnsen, Christine; Østgaard, Nikolai (2012)An important source of magnetospheric plasma is cold plasma from the terrestrial ionosphere. Low energy ions travel along the magnetic field lines and enter the magnetospheric lobes where they are convected toward the tail ... -
A survey of the polar cap density based on Cluster EFW probe measurements: Solar wind and solar irradiation dependence
Haaland, Stein; Svenes, Knut Ragnar; Lybekk, Bjørn; Pedersen, Arne (2012)The plasma density above the Earth's polar caps provide crucial information about the state of the magnetosphere. This region of space is known for its tenuous plasma and extremely low plasma densities, thus making traditional ... -
The ECOMA 2007 campaign: rocket observations and numerical modelling of aerosol particle charging and plasma depletion in a PMSE/NLC layer
Brattli, Alvin Andreas; Lie-Svendsen, Øystein; Svenes, Knut Ragnar; Hoppe, Ulf-Peter; Strelnikova, I.; Rapp, M.; Latteck, R.; Friedrich, M. (2009)The ECOMA series of rocket payloads use a set of aerosol particle, plasma, and optical instruments to study the properties of aerosol particles and their interaction with the ambient plasma environment in the polar mesopause ...