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    Organic compound alteration during hypervelocity collection of carbonaceous materials in aerogel

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    Author
    Spencer, M. K.
    Clemett, S. J.
    Sandford, S. A.
    McKay, D. S.
    Zare, R. N.
    Issue Date
    2009-01-01
    Keywords
    astrochemistry
    cometary dust
    Impact heating
    organic compounds
    
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    Citation
    Spencer, M. K., Clemett, S. J., Sandford, S. A., McKay, D. S., & Zare, R. N. (2009). Organic compound alteration during hypervelocity collection of carbonaceous materials in aerogel. Meteoritics & Planetary Science, 44(1), 15-24.
    Publisher
    The Meteoritical Society
    Journal
    Meteoritics & Planetary Science
    URI
    http://hdl.handle.net/10150/656522
    DOI
    10.1111/j.1945-5100.2009.tb00714.x
    Additional Links
    https://meteoritical.org/
    Abstract
    The NASA Stardust mission brought to Earth micron-size particles from the coma of comet 81P/Wild 2 using aerogel, a porous silica material, as the capture medium. A major challenge in understanding the organic inventory of the returned comet dust is identifying, unambiguously, which organic molecules are indigenous to the cometary particles, which are produced from carbon contamination in the Stardust aerogel, and which are cometary organics that have been modified by heating during the particle capture process. Here it is shown that 1) alteration of cometary organic molecules along impact tracks in aerogel is highly dependent on the original particle morphology, and 2) organic molecules on test-shot terminal particles are mostly preserved. These conclusions are based on two-step laser mass spectrometry ((L^2)MS) examinations of test shots with organic-laden particles (both tracks in aerogel and the terminal particles themselves).
    Type
    Article
    text
    Language
    en
    ISSN
    1945-5100
    ae974a485f413a2113503eed53cd6c53
    10.1111/j.1945-5100.2009.tb00714.x
    Scopus Count
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    Meteoritics & Planetary Science, Volume 44, Number 1 (2009)

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