2.3.1 spase://CNES/Instrument/CDPP-AMDA/MEX/IMA IMA 2017-01-13T00:00:00Z The Ion Mass Analyzer (IMA) of the ASPERA-3 package flown on Mars Express provides ion measurements in the energy range 0.01 - 36 keV/q for the main ion components H+, H2+, He+, O+, and for the group of molecular ions with M/q ration between 20 and 80 amu/e. IMA has a 90 deg x 360 deg field of view. Electrostatic sweeping performs elevation (+/- 45 deg) coverage. The IMA sensor is a spherical electrostatic analyzer followed by a circular magnetic separating section. A large diameter MCP with a discrete anode images the matrix azimuth x mass. spase://SMWG/Person/Stas.Barabash PrincipalInvestigator ASPERA web page, IRF, Kiruna http://www2.irf.se/aspera-3 MEX IMA/ELS Inventory Graph, IRAP, Toulouse http://goezog.irap.omp.eu/DD_MARS/Inventory.html MassSpectrometer ASPERA3 spase://CNES/Observatory/CDPP-AMDA/MEX