1 School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China 2 Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China
Funds: supported by the Natural Science Foundation of China (Nos. 10735010 10975006), the Chinese Major State Basic Research Development Program(No. 2007CB815000)
An angular momentum projected potential-energy-surface (PES) calculation, which takes both rotation symmetry restoration and multi-quasiparticle excitation into account, is developed by using the macroscopic-microscopic model and the projected shell model (PSM). Within this method, it may become possible to modify the excitation spectra which are influenced by shape-softness of nuclei, including high-K states. As our first example, this method is adopted to study the collective and multi-quasiparticle excitations of 178Hf, and the results are in good agreement with the existing experimental data. In addition, as for the dominant structure of non-collective 6+ bands, the conflict between experimental result and the previous PSM calculation is clarified.
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