First direct detection of ions originating from the Moon by MAP-PACE IMA onboard SELENE (KAGUYA)

Details First direct detection of ions originating from the Moon by MAP-PACE IMA onboard SELENE (KAGUYA) First direct detection of ions originating from the Moon by MAP-PACE IMA onboard SELENE (KAGUYA)

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3611201y&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 11, CiteID L11201

Biology

14

Planetary Sciences: Solar System Objects: Moon (1221), Planetary Sciences: Astrobiology: Planetary Atmospheres, Clouds, And Hazes (0343), Planetary Sciences: Comets And Small Bodies: Atmospheres (1060)

Scientific paper

The Moon has no global intrinsic magnetic field and only has a very thin atmosphere. Ion measurements made from lunar orbit provide us with information regarding interactions between the solar wind and planetary surface, the surface composition through secondary ion mass spectrometry and the source and loss mechanisms of planetary tenuous atmosphere. An ion energy mass spectrometer MAP-PACE IMA onboard a lunar orbiter SELENE (KAGUYA) has detected low-energy ions at 100-km altitude. The MAP-PACE measurements have elucidated that the ions originate from the lunar surface and exosphere and that the ions are at least composed of He+, C+, O+, Na+ and K+. Following the discovery of the lunar Na and K exospheres by the ground-based observation, MAP-PACE IMA have found the He, C and O exospheres around the Moon.

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