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  • Absolute cross sections for multiple ionization of noble gases by swift proton impact

    Author(s)
    Cavalcanti, EG
    Sigaud, GM
    Montenegro, EC
    Schmidt-Bocking, H
    Griffith University Author(s)
    Cavalcanti, Eric G.
    Year published
    2003
    Metadata
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    Abstract
    Absolute cross sections, sq+, for multiple ionization of He (q = 1), Ne (q = 1, 2, and 3), Ar (q = 1, 2, 3, and 4), Kr (q = 1, 2, 3, and 4), and Xe (q = 1, 2, 3, 4, and 5) atoms by protons in the 0.75-3.5 MeV impact energy range have been measured. The present results are in good agreement with the previously published data in the case of the single-and double-ionization cross sections, but some non-systematic discrepancies appear for higher charge states. A detailed comparison with electron impact cross sections in these gases is performed, and it shows that the cross sections for single ionization by high-velocity protons ...
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    Absolute cross sections, sq+, for multiple ionization of He (q = 1), Ne (q = 1, 2, and 3), Ar (q = 1, 2, 3, and 4), Kr (q = 1, 2, 3, and 4), and Xe (q = 1, 2, 3, 4, and 5) atoms by protons in the 0.75-3.5 MeV impact energy range have been measured. The present results are in good agreement with the previously published data in the case of the single-and double-ionization cross sections, but some non-systematic discrepancies appear for higher charge states. A detailed comparison with electron impact cross sections in these gases is performed, and it shows that the cross sections for single ionization by high-velocity protons are substantially smaller than those corresponding to equi-velocity electrons for heavier targets.
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    Journal Title
    Journal of Physics B: Atomic, Molecular and Optical Physics
    Volume
    36
    Publisher URI
    https://iopscience.iop.org/article/10.1088/0953-4075/36/14/311
    DOI
    https://doi.org/10.1088/0953-4075/36/14/311
    Subject
    Atomic, molecular and optical physics
    Atomic and molecular physics
    Publication URI
    http://hdl.handle.net/10072/26813
    Collection
    • Journal articles

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