Fission barriers in covariant density functional theory: Extrapolation to superheavy nuclei

被引:121
作者
Abusara, H. [1 ,2 ]
Afanasjev, A. V. [1 ]
Ring, P. [3 ]
机构
[1] Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA
[2] Palestine Polytech Univ, Dept Elect & Appl Phys, IL-705 Hebron, Israel
[3] Tech Univ Munich, Fak Phys, D-85748 Garching, Germany
来源
PHYSICAL REVIEW C | 2012年 / 85卷 / 02期
关键词
HARTREE-BOGOLIUBOV THEORY; GROUND-STATE PROPERTIES; HEAVY; ACTINIDES; SHAPES;
D O I
10.1103/PhysRevC.85.024314
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
Systematic calculations of fission barriers allowing for triaxial deformation are performed for even-even superheavy nuclei with charge number Z = 112-120 using three classes of covariant density functional models. The softness of nuclei in the triaxial plane leads to an emergence of several competing fission paths in the region of the inner fission barrier in some of these nuclei. The outer fission barriers are considerably affected by triaxiality and octupole deformation. General trends of the evolution of the inner and the outer fission barrier heights are discussed as a function of the particle numbers.
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页数:17
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