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    The use of Auger spectroscopy for the in situ elemental characterization of sub-micrometer presolar grains

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    Author
    Stadermann, F. J.
    Floss, C.
    Bose, M.
    Lea, A. S.
    Issue Date
    2009-01-01
    Keywords
    Auger Spectroscopy
    presolar grains
    minerals
    
    Metadata
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    Citation
    Stadermann, F. J., Floss, C., Bose, M., & Lea, A. S. (2009). The use of Auger spectroscopy for the in situ elemental characterization of sub‐micrometer presolar grains. Meteoritics & Planetary Science, 44(7), 1033-1049.
    Publisher
    The Meteoritical Society
    Journal
    Meteoritics & Planetary Science
    URI
    http://hdl.handle.net/10150/656593
    DOI
    10.1111/j.1945-5100.2009.tb00786.x
    Additional Links
    https://meteoritical.org/
    Abstract
    Presolar grains are small samples of stardust that can be found at low abundances in some of the most unaltered types of extraterrestrial materials. While earlier laboratory studies of stardust mainly focused on grain types that can be extracted from bulk meteorites by acid dissolution techniques, such as silicon carbide and graphite, recent analyses of presolar silicates rely on isotope imaging searches for locating these grains in situ. Since presolar silicates are generally less than a micrometer in diameter and represent at best only a few hundred ppm of their host materials (e.g., primitive meteorites or interplanetary dust particles), locating and studying these particles can be analytically challenging. Recently, we began using scanning Auger spectroscopy for the in situ elemental characterization of presolar silicate grains as a complement to NanoSIMS isotopic studies for obtaining spatially matched compositional data. Auger spectroscopy is a well-established analytical technique for elemental characterizations in the material sciences, but has not been widely used in geological applications. We discuss the application of this technique to sub-micrometer sized silicate grains and address practical issues such as sample preparation, measurement settings, spatial resolution, data processing, and elemental quantification.
    Type
    Article
    text
    Language
    en
    ISSN
    1945-5100
    ae974a485f413a2113503eed53cd6c53
    10.1111/j.1945-5100.2009.tb00786.x
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    Meteoritics & Planetary Science, Volume 44, Number 7 (2009)

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