Nuclear landscape in covariant density functional theory

被引：83

作者：

Afanasjev, A. V. ^{[1
]}

Agbemava, S. E. ^{[1
]}

Ray, D. ^{[1
]}

Ring, P. ^{[2
]}

机构：

[1] Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA

[2] Tech Univ Munich, Fak Phys, D-85748 Garching, Germany

来源：

PHYSICS LETTERS B | 2013年 / 726卷 / 4-5期

关键词：

Proton and neutron drip lines; Covariant density functional theory; Two-particle separation energies; GROUND-STATE PROPERTIES; HARTREE-BOGOLIUBOV THEORY; MEAN-FIELD DESCRIPTION; FINITE NUCLEI; DRIP-LINE; DEFORMATIONS; MASSES;

D O I：

10.1016/j.physletb.2013.09.017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The neutron and proton drip lines represent the limits of the nuclear landscape. While the proton drip line is measured experimentally up to rather high Z values, the location of the neutron drip line for absolute majority of elements is based on theoretical predictions which involve extreme extrapolations. The first ever systematic investigation of the location of the proton and neutron drip lines in the covariant density functional theory has been performed by employing a set of the state-of-the-art parametrizations. Calculated theoretical uncertainties in the position of two-neutron drip line are compared with those obtained in non-relativistic DFT calculations. Shell effects drastically affect the shape of two-neutron drip line. In particular, model uncertainties in the definition of two-neutron drip line at Z similar to 54, N = 126 and Z similar to 82, N = 184 are very small due to the impact of spherical shell closures at N = 126 and 184. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：680 / 684

页数：5

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