The Potassium (K) — Argon (Ar) Laser Experiment (KArLE) will make in situ noble-gas geochronology measurements aboard planetary robotic landers and rovers. Laser-Induced Breakdown Spectroscopy (LIBS) is used to measure the K abundance in a sample and to release its noble gases; the evolved Ar is measured by mass spectrometry (MS); and relative K content is related to absolute Ar abundance by sample mass, determined by optical measurement of the ablated volume. KArLE measures a whole-rock K-Ar age to 10% or better for rocks 2 billion years old (Ga) or older, sufficient to resolve the absolute age of many planetary samples. The LIBS-MS approach is attractive because the analytical components have been flight proven, do not require further technical development, and provide complementary measurements as well as in situ geochronology.


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    Titel :

    The Potassium-Argon Laser Experiment (KArLE): In situ geochronology for planetary robotic missions


    Beteiligte:
    Cohen, Barbara (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2016-03-01


    Format / Umfang :

    3230151 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch