Ion variability at 67P during perihelion: cross-comparison between ROSINA/DFMS and RPC dataset
Abstract
We propose here a cross-comparison between the observations performed by the mass spectrometer ROSINA/DFMS, which has probed the ion composition during perihelion, and the data from the five RPC sensors which have provided the plasma properties: magnetic field, ion/electron energy, spacecraft potential. The first results have revealed that there is a strong correlation between the ion count rate and composition from ROSINA/DFMS and the spacecraft potential, which affects strongly the measurements. Also, thanks to RPC/MAG, we were able to identify diamagnetic crossings. At these times, we observed a strong increase in the ion count rate from ROSINA/DFMS. We will show further comparisons with other sensors from RPC like IES and ICA.
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