2020 Impact factor 3.043
Hadrons and Nuclei
Eur. Phys. J. A 5, 13-16

Short note

High spin structure of 117I

C.-B. Moon1 - T. Komatsubara2 - T. Shizuma2, Y. Sasaki2 - H. Ishiyama1 - T. Jumatsu1 - K. Furuno2

1 Department of Physics, Hoseo University, Chung-Nam 336-795, Korea
2 Institute of Physics and Tandem Accelerator Center, University of Tsukuba, Ibaraki 305-8577, Japan

Received: 1 March 1999 Communicated by B. Herskind

Abstract
High-spin states in 117I have been studied via the 103Rh(18O, 4n) reaction at a beam energy of 85 MeV. Many deformed rotational bands built on the proton h11/2, g7/2, and g9/2 orbitals have been identified. Among them, an unfavoured rotational band and a quasi-gamma band based on the h11/2 state have been newly observed. Moreover, positive-parity states above $I^{\pi} = 35/2^+$ reported in the previous work have been rearranged. Several energetically favoured states have been assigned to noncollective oblate states based on various quasiparticle configurations with $\beta_2 \approx 0.18$-0.19 and $\gamma = 60^{\circ}$.

PACS
21.10.Re Collective levels - 27.60.+j $90 \le A \le 149$


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