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

Waring, M.P. and Paul, E.S. and Beausang, C.W. and Clark, R.M. and Cunningham, R.A. and Davinson, T. and Forbes, S.A. and Fossan, D.B. and Gale, S.J. and Gizon, A. and Gizon, J. and Hauschild, K. and Hibbert, I.M. and James, A.N. and Jones, P.M. and Joyce, M.J. and Lafosse, D.R. and Page, R.D. and Ragnarsson, I. and Schnare, H. and Sellin, P.J. and Simpson, J. and Vaska, P. and Wadsworth, R. and Woods, P.J. (1995) Intruder bands in (Z=53) I113:Band termination interpretation. Physical Review C, 51. pp. 2427-2438. ISSN 0556-2813

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High spin states in 113I were studied with the 58Ni(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)ħ have been identified, all of which reach frequencies ħω>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.

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Journal Article
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Physical Review C
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01 Apr 2019 13:10
Last Modified:
20 Sep 2023 01:21