2.2.6 spase://CDPP/Instrument/AMDA/VEX/IMA Venus Express ASPERA-4 Ion Mass Analyzer 2012-06-13T00:00:00Z The Ion Mass Analyzer (IMA) of the ASPERA-4 package flown on Venus 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 PSA ASPERA web page ftp://psa.esac.esa.int/pub/mirror/VENUS-EXPRESS/ASPERA4/VEX-V-SW-ASPERA-2-ELS-V1.0/CATALOG/INST.CAT RetardingPotentialAnalyser ASPERA4_IMA spase://CDPP/Observatory/AMDA/VEX