BepiColombo and Solar Orbiter VGAM2 : Coordinated observations of the ion composition and total ion flux in the induced magnetosphere of Venus

International audienc

BepiColombo and Solar Orbiter VGAM2 : Coordinated observations of the ion composition and total ion flux in the induced magnetosphere of Venus

International audienc

BepiColombo and Solar Orbiter VGAM2 : Coordinated observations of the ion composition and total ion flux in the induced magnetosphere of Venus

International audienc

First insights on the organic species from the high resolution mass spectrometer ROSINA DFMS on-board the Rosetta spacecraft

International audienceStarting in August 2014, the ROSINA experiment will characterize the composition and dynamics of 67P/Churyumov-Gerasimenko’s coma. ROSINA consists of a suite of three instruments: a pressure sensor (COPS: COmetary Pressure Sensor) and two mass spectrometers: the Reflectron Time of Flight mass spectrometer (RTOF) and the Double Focusing Mass Spectrometer (DFMS). Here we will focus on the first results obtained by DFMS, the high-resolution mass spectrometer of ROSINA. DFMS is a traditional magnetic mass spectrometer that combines an electrostatic analyzer for energy analysis with a magnet for momentum analysis. To date, DFMS is the highest mass resolution mass spectrometer in space, with resolution (m/Δm = 3000 at 1% of the peak height at 28 amu/q). It will be able to resolve CO from N2 at m/z= 28 amu/q or 12CH and 13C at m/z= 13 amu/q. We will present the first results of DFMS: the detection of organic species and their implication for the origin of cometary material