2.2.2 spase://SMWG/Instrument/MarsExpress/ASPERA3/IMA Mars Express ASPERA-3 Ion Mass Analyzer 2019-05-05T12:34:56Z The Ion Mass Analyzer (IMA) of the ASPERA-3 package flown on Mars Express provides ion measurements in the energy range 0.01 - 40 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 4.6 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/Rickard.Lundin PrincipalInvestigator PDS ASPERA web page http://pds-geosciences.wustl.edu/missions/mars_express/aspera.htm RetardingPotentialAnalyser ASPERA3_IMA spase://SMWG/Observatory/MarsExpress