Physics
Scientific paper
Mar 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005icar..174...31s&link_type=abstract
Icarus, Volume 174, Issue 1, p. 31-35.
Physics
56
Scientific paper
We present results obtained for Epinal (H5), an ordinary chondrite meteorite, irradiated with 60 keV Ar++ ions, simulating solar wind heavy particle irradiation. Bidirectional reflectance spectra (0.3 2.67 μm) measured after irradiating Epinal samples with different ion fluences exhibit a progressive reddening that is similar to the spread of spectra observed for S-type near-Earth asteroids. The timescales for inducing the same effects in space as those obtained in laboratory are estimated to be 10 10 yr. These results suggest irradiation by heavy ions may be a very efficient weathering process in near-Earth space.
Barucci Maria-Antonella
Binzel Richard
Blanco Ariel
Brunetto Rosario
Dotto Elisabetta
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