First identification of rotational band structures in <sub>75</sub><SUP>166</SUP>Re<sub>91</sub>

Li, HJ, Doncel, M, Patial, M, Cederwall, B, Back, T, Jakobsson, U, Auranen, K, Boenig, S, Drummond, M, Grahn, T
et al (show 26 more authors) (2015) First identification of rotational band structures in <sub>75</sub><SUP>166</SUP>Re<sub>91</sub>. PHYSICAL REVIEW C, 92 (1). 014310-.

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Excited states in the odd-odd, highly neutron-deficient nucleus Re166 have been investigated via the Mo92(Kr78,3p1n)Re166 reaction. Prompt γ rays were detected by the JUROGAM II γ-ray spectrometer, and the recoiling fusion-evaporation products were separated by the recoil ion transport unit (RITU) gas-filled recoil separator and implanted into the Gamma Recoil Electron Alpha Tagging spectrometer located at the RITU focal plane. The tagging and coincidence techniques were applied to identify the γ-ray transitions in Re166, revealing two collective, strongly coupled rotational structures, for the first time. The more strongly populated band structure is assigned to the πh11/2[514]9/2- - νi13/2[660]1/2+ Nilsson configuration, while the weaker structure is assigned to be built on a two-quasiparticle state of mixed πh11/2[514]9/2- - ν[h9/2f7/2]3/2- character. The configuration assignments are based on the electromagnetic characteristics and rotational properties, in comparison with predictions from total Routhian surface and particle-rotor model calculations.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 02 Aug 2016 15:42
Last Modified: 15 Mar 2024 00:44
DOI: 10.1103/PhysRevC.92.014310
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