High-K multi-particle bands and pairing reduction in 254No |
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Authors: | Xiao-Tao He Shu-Yong Zhao Zhen-Hua Zhang Zhong-Zhou Ren |
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Affiliation: | 1. College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China2. Mathematics and Physics Department, North China Electric Power University, Beijing 102206, China3. School of Physics Science and Engineering, Tongji University, Shanghai 200092, China |
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Abstract: | The multi-particle states and rotational properties of the two-particle bands in 254No are investigated by the cranked shell model with pairing correlations treated by the particle number conserving method. The rotational bands on top of the two-particle Kπ= 3+, 8- and 10+ states and the pairing reduction are studied theoretically in 254No for the first time. The experimental excitation energies and moments of inertia of the multi-particle states are reproduced well by the calculations. Better agreement with the data is achieved by including the high-order deformation ε6,J(1) in these two-particle bands compared with the ground state band is attributed to the pairing reduction due to the Pauli blocking effect. |
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Keywords: | rotational band spin assignment band-crossing high-j orbital transfermium nuclei nuclear deformation |
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