Collective and noncollective states in 117Te

High-spin states of the 117Te nucleus were studied by in-beam γ-ray spectroscopy with the 103 Rh( 18O ,p3n) fusion-evaporation reaction at a beam energy of 85 MeV. γ-γ coincidence and γ-γ angular correlation analyses were employed for determining the level scheme of 117Te. The previously known state...

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Bibliographic Details
Published in:Nuclear physics. A 1999-09, Vol.657 (3), p.251-266
Main Authors: Moon, C.-B, Chae, S.J, Komatsubara, T, Shizuma, T, Sasaki, Y, Ishiyama, H, Jumatsu, T, Furuno, K
Format: Article
Language:English
Subjects:
Nuclear reactions
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Summary:High-spin states of the 117Te nucleus were studied by in-beam γ-ray spectroscopy with the 103 Rh( 18O ,p3n) fusion-evaporation reaction at a beam energy of 85 MeV. γ-γ coincidence and γ-γ angular correlation analyses were employed for determining the level scheme of 117Te. The previously known states based on the ν h 11 2 orbital have been widely extended and some states have been corrected. Based on the TRS calculations, many unusually low-lying states in their excitation energies have been assigned to noncollective oblate states built on various quasiparticle configurations with β 2 ≈ 0.17 and γ = 60°. Meanwhile, in the positive-parity states built on the ν g 7 2 [413] 5 2 + and the ν d 5 2 [402] 5 2 + configurations, the vibrational- and the rotational structures have been found to coexist.
ISSN:0375-9474
DOI:10.1016/S0375-9474(99)00151-7