Collinear laser spectroscopy of neutron-rich cerium isotopes near the N = 88 shape transition

B. Cheal, M. Avgoulea, J. Billowes, P. Campbell, K. T. Flanagan, D. H. Forest, M. D. Gardner, J. Huikari, B. A. Marsh, A. Nieminen, H. L. Thayer, G. Tungate, J. Äystö

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Laser spectroscopy has been used to measure the isotope shifts of 146Ce and 148Ce relative to 144Ce, Z = 58. The new data, in combination with existing optical data on the stable isotopes and radioactive 144Ce isotope, permits a study of charge radii variations for the even-N Ce nuclei from N = 78 to N = 90. This range covers both the N = 82 shell closure and the N = 88 shape transition region. A marked increase in deformation occurs at N = 88 for elements with Z ≥ 60 but not for those with Z ≤ 56. The new data for Ce (Z = 58) show an intermediate behaviour, resulting in a smooth increase in deformation with Z in the N = 88, 90 region.
    Original languageEnglish
    Pages (from-to)2479-2484
    Number of pages5
    JournalJournal of Physics G: Nuclear and Particle Physics
    Volume29
    Issue number11
    DOIs
    Publication statusPublished - Nov 2003

    Keywords

    • Isotope effect; Laser spectroscopy (laser spectroscopy for isotope shifts of 146Ce and 148Ce relative to 144Ce); Nuclear charge radii (of cerium isotopes)

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