The Multi-Needle Langmuir Probe System on Board NorSat-1 |
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Authors: | H Hoang L B N Clausen K Røed T A Bekkeng E Trondsen B Lybekk H Strøm D M Bang-Hauge A Pedersen A Spicher J I Moen |
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Institution: | 1.Department of Physics,University of Oslo,Oslo,Norway |
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Abstract: | On July 14th, 2017, the first Norwegian scientific satellite NorSat-1 was launched into a high-inclination (98°), low-Earth orbit (600 km altitude) from Baikonur, Kazakhstan. As part of the payload package, NorSat-1 carries the multi-needle Langmuir probe (m-NLP) instrument which is capable of sampling the electron density at a rate up to 1 kHz, thus offering an unprecedented opportunity to continuously resolve ionospheric plasma density structures down to a few meters. Over the coming years, NorSat-1 will cross the equatorial and polar regions twice every 90 minutes, providing a wealth of data that will help to better understand the mechanisms that dissipate energy input from larger spatial scales by creating small-scale plasma density structures within the ionosphere. In this paper we describe the m-NLP system on board NorSat-1 and present some first results from the instrument commissioning phase. We show that the m-NLP instrument performs as expected and highlight its unique capabilities at resolving small-scale ionospheric plasma density structures. |
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