Photoionization of neutral iron from the ground and excited states

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    Photoionization of neutral iron from the ground and excited states. / Zatsarinny, Oleg; Bartschat, Klaus; Fernandez Menchero, Luis; Tayal, S.S.

    In: Physical Review A, Vol. 99, No. 2, 28.02.2019, p. 023430.

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    Zatsarinny, Oleg ; Bartschat, Klaus ; Fernandez Menchero, Luis ; Tayal, S.S. / Photoionization of neutral iron from the ground and excited states. In: Physical Review A. 2019 ; Vol. 99, No. 2. pp. 023430.

    Bibtex

    @article{8b16370e32fb4443a2b106388093f7cb,
    title = "Photoionization of neutral iron from the ground and excited states",
    abstract = "The B-spline R-matrix method is used to investigate the photoionization of neutral iron from the ground and excited states in the energy region from the ionization thresholds to 2 Ry. The multiconfiguration Hartree-Fock method in connection with adjustable configuration expansions and term-dependent orbitals is employed for an accurate representation of the initial states of Fe I and the target wave functions of Fe II. The close-coupling expansion contains 261 LS states of Fe II and includes all levels of the 3d6 4s, 3d5 4s2, 3d7, 3d6 4p, and 3d5 4s 4p configurations. Full inclusion of all terms from the principal configurations considerably changes both the low-energy resonance structure and the energy dependence of the background cross sections. Partial cross sections are analyzed in detail to clarify the most important scattering channels. Comparison with other calculations is used to place uncertainty bounds on our final photoionization cross sections and to assess the likely uncertainties in the existing data sets.",
    author = "Oleg Zatsarinny and Klaus Bartschat and {Fernandez Menchero}, Luis and S.S. Tayal",
    year = "2019",
    month = "2",
    day = "28",
    doi = "10.1103/PhysRevA.99.023430",
    language = "English",
    volume = "99",
    pages = "023430",
    journal = "Physical Review A (Atomic, Molecular, and Optical Physics)",
    issn = "1050-2947",
    publisher = "American Physical Society",
    number = "2",

    }

    RIS

    TY - JOUR

    T1 - Photoionization of neutral iron from the ground and excited states

    AU - Zatsarinny, Oleg

    AU - Bartschat, Klaus

    AU - Fernandez Menchero, Luis

    AU - Tayal, S.S.

    PY - 2019/2/28

    Y1 - 2019/2/28

    N2 - The B-spline R-matrix method is used to investigate the photoionization of neutral iron from the ground and excited states in the energy region from the ionization thresholds to 2 Ry. The multiconfiguration Hartree-Fock method in connection with adjustable configuration expansions and term-dependent orbitals is employed for an accurate representation of the initial states of Fe I and the target wave functions of Fe II. The close-coupling expansion contains 261 LS states of Fe II and includes all levels of the 3d6 4s, 3d5 4s2, 3d7, 3d6 4p, and 3d5 4s 4p configurations. Full inclusion of all terms from the principal configurations considerably changes both the low-energy resonance structure and the energy dependence of the background cross sections. Partial cross sections are analyzed in detail to clarify the most important scattering channels. Comparison with other calculations is used to place uncertainty bounds on our final photoionization cross sections and to assess the likely uncertainties in the existing data sets.

    AB - The B-spline R-matrix method is used to investigate the photoionization of neutral iron from the ground and excited states in the energy region from the ionization thresholds to 2 Ry. The multiconfiguration Hartree-Fock method in connection with adjustable configuration expansions and term-dependent orbitals is employed for an accurate representation of the initial states of Fe I and the target wave functions of Fe II. The close-coupling expansion contains 261 LS states of Fe II and includes all levels of the 3d6 4s, 3d5 4s2, 3d7, 3d6 4p, and 3d5 4s 4p configurations. Full inclusion of all terms from the principal configurations considerably changes both the low-energy resonance structure and the energy dependence of the background cross sections. Partial cross sections are analyzed in detail to clarify the most important scattering channels. Comparison with other calculations is used to place uncertainty bounds on our final photoionization cross sections and to assess the likely uncertainties in the existing data sets.

    U2 - 10.1103/PhysRevA.99.023430

    DO - 10.1103/PhysRevA.99.023430

    M3 - Article

    VL - 99

    SP - 023430

    JO - Physical Review A (Atomic, Molecular, and Optical Physics)

    T2 - Physical Review A (Atomic, Molecular, and Optical Physics)

    JF - Physical Review A (Atomic, Molecular, and Optical Physics)

    SN - 1050-2947

    IS - 2

    ER -

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