Intruder bands in (Z=53) I113: Band termination interpretation

M.P. Waring, E.S. Paul, C.W. Beausang, R.M. Clark, R.A. Cunningham, T. Davinson, S.A. Forbes, D.B. Fossan, S.J. Gale, A. Gizon, J. Gizon, K. Hauschild, I.M. Hibbert, A.N. James, P.M. Jones, M.J. Joyce, D.R. Lafosse, R.D. Page, I. Ragnarsson, H. SchnareP.J. Sellin, J. Simpson, P. Vaska, R. Wadsworth, P.J. Woods

Research output: Contribution to journalArticlepeer-review

Abstract

High spin states in I113 were studied with the Ni58(58Ni, 3pγ) reaction at 240 MeV, using the eurogam array in Daresbury, United Kingdom, with 45 Ge detectors. A total of five deformed intruder bands extending to spins I ranging from (73/2-89/2)Latin small letter h with stroke have been identified, all of which reach frequencies Latin small letter h with strokeω>1.0 MeV and excitation energies ∼25 MeV. A gradual dropoff of the dynamic moment of inertia scrI(2) with increasing rotational frequency has been observed and attributed to a mode of ''soft'' band termination involving valence particle alignment. In this process, the nucleus progresses gradually, over many transitions, towards a noncollective oblate (γ=+60°) band terminating state.
Original languageEnglish
Pages (from-to)2427-2438
Number of pages12
JournalPhysical Review C
Volume51
Issue number5
DOIs
Publication statusPublished - 1 Jan 1995

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