High-spin spectroscopy and quasiparticle alignments in 124,125Ce

J. F. Smith, V. Medina-Chico, C. J. Chiara, M. P. Carpenter, C. N. Davids, M. Devlin, J. L. Durell, D. B. Fossan, S. J. Freeman, R. V F Janssens, D. R. LaFosse, M. J. Leddy, P. Reiter, D. G. Sarantites, D. Seweryniak, K. Starosta, R. Wadsworth, A. N. Wilson, J. N. Wilson

    Research output: Contribution to journalArticlepeer-review


    Rotational bands have been studied to high spins in the neutron-deficient 124,125Ce nuclei. The nuclei were populated using the 64Zn(64Zn,2p2n)124Ce and 64Zn( 64Zn,2pn)125Ce reactions, with a beam energy of 260 MeV. High-fold γ-ray coincidence data were collected using the Gammasphere germanium-detector array. The Microball charged-particle detector array was used to provide channel selection. The previously established level structures of both 124,125Ce have been extended to high spins (∼30ℏ), In addition, several new bands have been identified. The alignments of pairs of h11/0/2 neutrons and protons are observed in both nuclei. The alignments are compared to the predictions of Woods-Saxon cranked shell model calculations and to the systematics of h11/2 quasiparticle alignments in neighboring nuclei. The apparent ability of the cranked shell model to explain the h11/2 neutron alignments in 124,125Ce highlights the previously reported discrepancies between experiment and theory for the 128Ce isotope and, to a lesser extent, 126Ce.
    Original languageEnglish
    Pages (from-to)034339-1
    Number of pages34338
    JournalPhysical Review C - Nuclear Physics
    Issue number3
    Publication statusPublished - Mar 2004


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