2.4.0 spase://CNES/Instrument/CDPP/DEMETER/ISL Langmuir Probe (ISL) 2019-05-05T12:34:56Z The Langmuir probe experiment (ISL), has been designed for in situ measurements of the bulk parameters of the ionospheric thermal plasma. The ISL instrument is comprised of two sensors: (i) a classical cylindrical sensor and (ii) a spherical sensor with its surface divided in seven segments: six spherical caps electrically isolated and the rest of the sphere which is used as a guard electrode. The two main parameters measured by ISL are the electron density and temperature. They are obtained with a 1 s time-resolution. Lebreton et al. https://doi.org/10.1016/j.pss.2005.10.017 spase://CNES/Person/CDPP-Archive/Jean-Pierre.Lebreton PrincipalInvestigator spase://CNES/Person/CDPP-Archive/Pierre-Louis.Blelly CoInvestigator LangmuirProbe ISL Langmuir Probe Instrument spase://CNES/Observatory/CDPP/DEMETER