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.
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.
基金
supported by the National Natural Science Foundation of China (10735010, 10805040 and 10975006)
the China Postdoctoral Science Foundation (20110490228)
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
