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    Direct Pb Isotopic Analysis of a Nuclear Fallout Debris Particle from the Trinity Nuclear Test.

    Access Status
    Fulltext not available
    Authors
    Bellucci, J.
    Snape, J.
    Whitehouse, M.
    Nemchin, Alexander
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Bellucci, J. and Snape, J. and Whitehouse, M. and Nemchin, A. 2016. Direct Pb Isotopic Analysis of a Nuclear Fallout Debris Particle from the Trinity Nuclear Test.. Analytical Chemistry. 89 (3): pp. 1887-1891.
    Source Title
    Analytical Chemistry
    DOI
    10.1021/acs.analchem.6b04330
    ISSN
    0003-2700
    School
    Department of Applied Geology
    URI
    http://hdl.handle.net/20.500.11937/51247
    Collection
    • Curtin Research Publications
    Abstract

    The Pb isotope composition of a nuclear fallout debris particle has been directly measured in post-detonation materials produced during the Trinity nuclear test by a secondary ion mass spectrometry (SIMS) scanning ion image technique (SII). This technique permits the visual assessment of the spatial distribution of Pb and can be used to obtain full Pb isotope compositions in user-defined regions in a 70 µm × 70 µm analytical window. In conjunction with backscattered electron (BSE) and energy-dispersive spectroscopy (EDS) mapping of the same particle, the Pb measured in this fallout particle cannot be from a major phase in the precursor arkosic sand. Similarly, the Pb isotope composition of the particle is resolvable from the surrounding glass at the 2s uncertainty level (where s represents the standard deviation). The Pb isotope composition measured in the particle here is in excellent agreement with that inferred from measurements of green and red trinitite, suggesting that these types of particles are responsible for the Pb isotope compositions measured in both trinitite glasses.

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