Intruder bands in ({ital Z}=53) {sup 113}I: Band termination interpretation

Journal Article · Mon May 01 00:00:00 EDT 1995 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.51.2427· OSTI ID:44679

Waring, M P; Paul, E S; Beausang, C W; Clark, R M; Cunningham, R A; Davinson, T; Forbes, S A; Fossan, D B; Gale, S J; Gizon, A; Gizon, J; Hauschild, K; Hibbert, I M; James, A N; Jones, P M; Joyce, M J; LaFosse, D R; Page, R D; Ragnarsson, I; Schnare, H ; Sellin, P J; Simpson, J; Vaska, P; Wadsworth, R; Woods, P J ^[1]

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1. Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States)

High spin states in {sup 113}I were studied with the {sup 58}Ni({sup 58}Ni, 3{ital p}{gamma}) 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 {ital I} ranging from (73/2--89/2){h_bar} have been identified, all of which reach frequencies {h_bar}{omega}{gt}1.0 MeV and excitation energies {similar_to}25 MeV. A gradual dropoff of the dynamic moment of inertia {ital scrI}{sup (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 ({gamma}=+60{degree}) band terminating state.

• OSTI ID: 44679
• Journal Information: Physical Review, C, Vol. 51, Issue 5; Other Information: PBD: May 1995
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
IODINE 113
HIGH SPIN STATES
NICKEL 58 TARGET
NICKEL 58 REACTIONS
PHOTONS
PROTONS
MEV RANGE 100-1000
DEFORMED NUCLEI
MOMENT OF INERTIA
EXCITATION