Multiparticle configurations in N=84 isotones located at the proton drip line

D. Seweryniak, J. Uusitalo, P. Bhattacharyya, M. P. Carpenter, J. A. Cizewski, K. Y. Ding, C. N. Davids, N. Fotiades, R. V.F. Janssens, T. Lauritsen, C. J. Lister, A. O. MacChiavelli, D. Nisius, P. Reiter, W. B. Walters, P. J. Woods

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Excited states in the proton-rich N=84 isotones 72156Hf84,73157Ta84, and 74158W84 were observed using Pd102(Ni58,xp2n) reactions at 270 MeV. γ rays were detected with the Gammasphere array of Compton-suppressed Ge detectors coupled with the Argonne fragment mass analyzer and were assigned to individual reaction channels using the recoil-decay tagging method. Prompt γ-ray cascades were associated with the α decay of both the ground state and the 8+ isomeric state in Hf156, the h11/2 state in Ta157, and the 8+ isomeric state in W158. The level schemes constructed for Hf156,Ta157, and W158 are compared with these of lighter N=84 isotones and are discussed within the framework of the shell model.

Original languageEnglish (US)
Article number054319
JournalPhysical Review C - Nuclear Physics
Issue number5
StatePublished - May 2005

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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