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  • Experimental and theoretical (e, 2e) studies of argon (3p) ionization in asymmetric geometry

    Author(s)
    Stevenson, M
    Leighton, GJ
    Crowe, A
    Bartschat, K
    Vorov, OK
    Madison, DH
    Griffith University Author(s)
    Stevenson, Mark A.
    Bartschat, Klaus
    Year published
    2005
    Metadata
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    Abstract
    Experimental and theoretical triple-differential cross sections (TDCS) are presented for ionization of the outer 3p shell of argon by 200 eV electrons scattered through an angle of 15ࠡnd for ejected electron energies of 2, 5, 10 and 20 eV. A distorted-wave Born approximation (DWBA) and a hybrid DWBA-R-matrix (DWBA-RM2) calculation both reproduce the shapes of the TDCS when the slow electron is ejected near the momentum-transfer direction. Near the opposite direction, the DWBA-RM2 model also achieves good agreement with experiment for the higher ejected electron energies, but discrepancies are observed for the lower energies. ...
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    Experimental and theoretical triple-differential cross sections (TDCS) are presented for ionization of the outer 3p shell of argon by 200 eV electrons scattered through an angle of 15ࠡnd for ejected electron energies of 2, 5, 10 and 20 eV. A distorted-wave Born approximation (DWBA) and a hybrid DWBA-R-matrix (DWBA-RM2) calculation both reproduce the shapes of the TDCS when the slow electron is ejected near the momentum-transfer direction. Near the opposite direction, the DWBA-RM2 model also achieves good agreement with experiment for the higher ejected electron energies, but discrepancies are observed for the lower energies. This three-way joint study emphasizes that it is essential to include a proper treatment of exchange in modelling low-energy ionization.
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    Journal Title
    Journal of Physics B: Atomic, Molecular and Optical Physics
    Volume
    38
    Issue
    4
    Publisher URI
    https://iopscience.iop.org/article/10.1088/0953-4075/40/8/C01
    DOI
    https://doi.org/10.1088/0953-4075/38/4/010
    Subject
    Atomic, molecular and optical physics
    Theoretical and computational chemistry
    Publication URI
    http://hdl.handle.net/10072/27633
    Collection
    • Journal articles

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