Investigation of octupole effects in superheavy nuclei with improved potential-energy-surface calculations |
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| Authors: | HuaLei Wang HongLiang Liu FuRong Xu ChangFeng Jiao |
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| Institution: | 1 School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China; 2 School of Physics and Engineering, Zhengzhou University, Zhengzhou 450001, China; 3 Center of Theoretical Nuclear Physics, National Laboratory for Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, China |
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| Abstract: | It has been found that high-order deformation (e.g. β
6) can have important effects on the structures of superheavy nuclei. In the present work, we investigate octupole deformation
effects on superheavy nuclei with an improved potential-energy-surface (PES) calculation by including reflection-asymmetric
deformations in a space of (β
2, β
3, β
4, β
5). The calculations give various deformations including highly deformed (β
2 ≈ 0.4) and superdeformed (β2 ≈ 0.7) shapes. The octupole-deformation degree of freedom mainly affects the fission barrier beyond the second minimum of
PES. |
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| Keywords: | octupole correlation Woods-Saxon potential potential energy surface Lipkin-Nogami approach energy curves |
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