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We performed pulse-laser irradiation experiments of a primitive meteorite to simulate space weathering by micrometeorite bombardments on C-type asteroids. Pellets of powdered Murchison CM2 chondrite were set in vacuum and exposed to pulse laser with a diameter of 0.5mm and delivered energies of 5, 10, and 15mJ. We measured reflectance spectra of unirradiated and irradiated surfaces of the pellets...
The Spectral Profiler (SP) is a visible–near infrared spectrometer onboard the Japanese Selenological and Engineering Explorer (SELENE), which was launched in 2007 and observed the Moon until June 2009. The SP consists of two gratings and three linear-array detectors: VIS (0.5–1.0 $\mu\hbox{m}$), NIR 1 (0.9–1.7 $\mu\hbox{m}$), and NIR 2 (1.7–2.6 $\mu\hbox{m}$). In this paper, we propose a new method...
The distribution and the geological context of the olivine-rich exposures in the South Pole-Aitken (SPA) Basin on the Moon were investigated based on the spectral data obtained from the Spectral Profiler (SP) and Multiband Imager (MI) onboard the Japanese lunar explorer Kaguya/SELENE. The olivine-rich exposures are found only in the peak rings or central peaks of the Schrödinger basin and Zeeman crater,...
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