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Auger and NanoSIMS investigations of pristine SiC
surfaces.
Croat T. K., Bernatowicz T. J., and Stadermann F. J. (2009)
Lunar & Planet. Sci. 40, Abstract #1887.
ABSTRACT
A significant fraction of pristine SiCs (those prepared
without harsh acid treatments) showed an apparently amorphous surface
coating not seen on other grains in the Murchison residue or on
conventionally-prepared presolar SiCs. Since presolar SiCs are known to
have traversed various astrophysical environments (e.g. ISM, early
solar system), these coatings could be a preserved feature of these
environments. Here, we report preliminary results from an investigation
of 15 pristine SiC surfaces with Auger Electron Spectroscopy and
subsequent NanoSIMS measurement of 3 SiCs.
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