A dipole band above the Iπ= 31/2− isomeric state in 189Pb

David Cullen

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


    This contribution focuses on the new observation of a dipole band built upon an Iπ=31/2− isomeric state in 189Pb, identified using recoil-isomer tagging at the University of Jyväskylä, Finland. This is the lightest odd-mass Pb isotope in which a dipole band is known. By comparison with the heavier-mass dipole bands, the dipole band in 189Pb was deduced to be based upon a configuration. However, in the 189Pb dipole band, the initial aligned angular momentum was larger than that exhibited by the dipole bands in the heavier-mass isotopes. This may be evidence for a reduced repulsive proton/neutron-hole interaction in 189Pb.
    Original languageEnglish
    Title of host publicationEPJ Web of Conferences
    Publication statusPublished - 5 Sept 2016


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