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Title:
Experimental test of a radiative transfer model of the optical effects of space weathering
Authors:
Lucey, Paul G.; Noble, Sarah K.
Affiliation:
AA(Hawaii Institute of Geophysics and Planetology, University of Hawaii at Manoa, Honolulu, HI 96822, USA), AB(NASA Johnson Space Center, Houston, TX 77058, USA)
Publication:
Icarus, Volume 197, Issue 1, p. 348-353. (Icarus Homepage)
Publication Date:
09/2008
Origin:
ELSEVIER
DOI:
10.1016/j.icarus.2008.05.008
Bibliographic Code:
2008Icar..197..348L

Abstract

We compare laboratory measurements of the optical effects of nanophase iron on near-IR reflectance spectra of transparent silica gel infused with small iron particles [Noble, S.K., Pieters, C.M., Keller, L.P., 2007. Icarus 192, 629 642] with a radiative transfer model of the process [Hapke, B., 2001. J. Geophys. Res. 106 (E5), 10039 10074]. We find that the measurements exhibit reddening and darkening effects of nanophase (<50 nm) iron particles, a darkening effect of somewhat larger particles (>50 nm) and mixing effects of silica gel particles of varying total iron abundance. The radiative transfer model reproduces the effects of nanophase iron within the experimental uncertainties.
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Physics
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