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.

引用

页数：7

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