Helium atom in the monochromatic electromagnetic field: AAAA Hylleraas basis treatment

I. A. Ivanov*, A. S. Kheifets

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    We apply a non-perturbative procedure for the calculation of the total photoionization cross-section of two-electron atomic systems. The procedure is based on the Floquet-Fourier representation of the time-dependent Schrödinger equation. With the use of the Hylleraas-type basis functions, the total photoionization cross-sections obtained are within the accuracy of a fraction of a percent, which, we believe, is the most accurate estimate for the cross-sections available. The total photoionization cross-sections for neutral helium deviate notably from the benchmark experimental data [J.A.R. Samson et al., J. Phys. B 27, 887 (1994)].

    Original languageEnglish
    Pages (from-to)249-255
    Number of pages7
    JournalEuropean Physical Journal D
    Volume38
    Issue number2
    DOIs
    Publication statusPublished - May 2006

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