Multi-Needle Langmuir Probe concept for high-resolution plasma density measurements: A potential novel plasma sensor for Cubesats

Details Multi-Needle Langmuir Probe concept for high-resolution plasma density measurements: A potential novel plasma sensor for Cubesats Multi-Needle Langmuir Probe concept for high-resolution plasma density measurements: A potential novel plasma sensor for Cubesats

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008epsc.conf..616m&link_type=abstract

European Planetary Science Congress 2008, Proceedings of the conference held 21-25 September, 2008 in Münster, Germany. Online a

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A new concept Langmuir probe to measure absolute electron density at 2 kHz sampling rate will be presented. It comprises multiple Needle Langmuir Probes (m-NLP) with diameter smaller than the Debye shielding length. Each probe is fixed at a different potential, positive above the platform potential to draw electrons. With this method we eliminate the need to determine the electron temperature in deriving the electron density. A 4-NLP system has now been completed for the ICI-2 sounding rocket to investigate HF radar backscatter irregularities above Svalbard in December 2008. The weight of the experiment is <100g, i.e. a low weight and high performance instrument. Simulations and test results from the plasma tank at ESTEC will be presented. Furthermore we will outline a preliminary plan for an m-NLP system to be prepared for a Norwegian Cubesat. The main motivation is to develop a new capability to monitor Fregion irregularities in Equatorial and Polar Regions, that is a particularly relevant space weather issue for satellite communication and navigation systems.

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