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Identification of a New Four-Quasiparticle State in Odd-Odd 186Au |
| LI Shi-Cheng1,2, SHI Yue3, ZHANG Yu-Hu1**, ZHOU Xiao-Hong1, XU Fu-Rong3, FANG Yong-De1, LIU Min-Liang1, DING Bing1,2, GUO Song1, LI Guang-Shun1,2, ZHOU Hou-Bing1,2, M. Oshima4, Y. Toh4, M. Koizumi4, A. Osa4, A. Kimura4, Y. Hatsukawa4, H. Hayakawa4, T. Shizuma4, J. Katakura4, M. Matsuda4, T. Morikawa5, M. Sugawara6, H. Kusakari7 |
1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
2Graduate University of Chinese Academy of Sciences, Beijing 100049
3School of Physics, and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871
4Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
5Department of Physics, Kyushu University, Fukuoka, 812-81, Japan
6Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan
7Chiba University, Inage-ku, Chiba 263-8512, Japan
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ZHOU Xiao-Hong, ZHANG Yu-Hu, XU Fu-Rong et al 2012 Chin. Phys. Lett. 29 022102 |
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Abstract The high-spin level structure of 186Au is re−investigated by means of in-beam γ−ray spectroscopy via the 172Yb(19F, 5nγ)186Au reaction. The oblate bands previously reported are revised and extended to higher−spin states. A new Iπ=(20+) excited state has been identified and assigned to the πh11/2−1 ⊗νi13/2-2h9/2-1 configuration. The total Routhian surface and cranked shell model calculations suggest that the πh11/2−1 ⊗νi13/2-2h9/2-1 band in 186Au has a non-axial deformation.
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| Keywords:
21.10.Re
23.20.Lv
27.70.+q
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Received: 19 August 2011
Published: 11 March 2012
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