Octupole deformation in neutron-rich actinides and superheavy nuclei and the role of nodal structure of single-particle wavefunctions in extremely deformed structures of light nuclei

被引：12
作者：
Afanasjev, A. V. [1 ]
Abusara, H. [2 ]
Agbemava, S. E. [1 ]
机构：
[1] Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA
[2] Birzeit Univ, Phys Dept, Birzeit, Palestine
来源：
PHYSICA SCRIPTA | 2018年 / 93卷 / 03期
关键词：
density functional theory; octupole deformation; extremely deformed shapes; wavefunction; MEAN-FIELD; COVARIANT;
D O I：
10.1088/1402-4896/aaa3d0
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Octupole deformed shapes in neutron-rich actinides and superheavy nuclei as well as extremely deformed shapes of the N similar to Z light nuclei have been investigated within the framework of covariant density functional theory. We confirmed the presence of new region of octupole deformation in neutron-rich actinides with the center around Z similar to 96, N similar to 196 but our calculations do not predict octupole deformation in the ground states of superheavy Z >= 108 nuclei. As exemplified by the study of Ar-36, the nodal structure of the wavefunction of occupied single-particle orbitals in extremely deformed structures allows to understand the formation of the alpha-clusters in very light nuclei, the suppression of the alpha-clusterization with the increase of mass number, the formation of ellipsoidal mean-field type structures and nuclear molecules.
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页数：7
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