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Earth, Planets and Space
Fig. 6 | Earth, Planets and Space

Fig. 6

From: In situ observations of ions and magnetic field around Phobos: the mass spectrum analyzer (MSA) for the Martian Moons eXploration (MMX) mission

Fig. 6

Ion observation results around the Moon by the Kaguya spacecraft during 2 h on April 3, 2008. a Energy-time spectrograms of ions measured by the ion analyzer (IMA) between 13:00 and 15:00 universal time (UT). Black asterisks indicate electrical potential gaps, \(\kappa = L\left| \varvec{E} \right|\), when the electric field is directed from the Moon to the spacecraft. b Ion observation configuration in the selenocentric solar ecliptic coordinates. The details of the observations are described in Saito et al. (2010)

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