Degree of accuracy in determining the nuclear electric quadrupole moment of radium

Jacek Bieron, Pekka Pyykkö

    Research output: Contribution to journalArticleScientificpeer-review


    The multiconfiguration Dirac-Hartree-Fock (MCDHF) model has been employed to calculate the atomic expectation values responsible for the hyperfine splittings of the 7s7p P-3(1,2) and P-1(1) levels of radium. Calculated electric field gradients, together with the experimental electric quadrupole hyperfine structure constants, allow us to extract a nuclear electric quadrupole moment Q(Ra-223) of 1.21(0.03) barn. This value is in good agreement with the semiempirical determination based on neutral radium hyperfine and fine structure, but differs from the latest result from an alkali-like radium ion.
    Original languageEnglish
    JournalPhysical Review A (Atomic, Molecular and Optical Physics)
    Issue number3
    Pages (from-to)art. 032502
    Publication statusPublished - 2005
    MoE publication typeA1 Journal article-refereed

    Fields of Science

    • 116 Chemical sciences

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