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Investigation of octupole effects in superheavy nuclei with improved potential-energy-surface calculations
  • 时间：0
  • 分类：O571.6[理学—粒子物理与原子核物理;理学—物理] O641.121[理学—物理化学;理学—化学]
  • 作者机构：[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]3Center of Theoretical Nuclear Physics, National Laboratory for Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, China
  • 相关基金：The work was supported by the National Natural Science Foundation of China （10735010, 10805040 and 10975006）, and the China Postdoctoral Science Foundation （20110490228）. We also thank the Computer Center of Peking University where numerical calculations were done.
作者： WANG HuaLei[1,2], LIU HongLiang[1], XU FuRong[1,3], JIAO ChangFeng[1]
关键词： 超重核, 势能面, 计算, 对称变形, 八极形变, 变形程度, PES, 超形变, octupole correlation, Woods-Saxon potential, potential energy surface, Lipkin-Nogami approach, energy curves
中文摘要：

它被发现了那高顺序的变丑(例如 6 ) 能在超重原子核的结构上有重要效果。在现在的工作，我们与改进 potential-energy-surface (足) 在超重原子核上调查 octupole 变丑效果由在一个空格包括思考不对称的变丑的计算(2， 3， 4， 5 ) 。计算给高度包括的各种各样的变丑使变形(2 0.4 ) 并且 superdeformed (2 0.7 ) 形状。自由的 octupole 变丑度主要在足的第二最小以外影响分裂障碍。

英文摘要：

It has been found that high-order deformation （e.g.β6） 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 （β2, β3, β4,β5）. The calculations give various deformations including highly deformed （β2 ≈ 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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