Deformation of nuclei close to the two-neutron drip line in the Mg region

被引：144

作者：

Terasaki, J

Flocard, H

Heenen, PH

Bonche, P

机构：

[1] FREE UNIV BRUSSELS,SERV PHYS NUCL THEOR,B-1050 BRUSSELS,BELGIUM

[2] CEA,SPHT,LAB DSM,F-91191 GIF SUR YVETTE,FRANCE

来源：

NUCLEAR PHYSICS A | 1997年 / 621卷 / 03期

关键词：

nuclei far from stability; Hartree-Fock-Bogoliubov method for deformed nuclei; S-2n and quadrupole moments for Mg isotopes;

D O I：

10.1016/S0375-9474(97)00183-8

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：

We present Hartree-Fock-Bogoliubov (HFB) calculations of the ground states of even Mg isotopes, A Skyrme force is used in the mean-field channel and a density-dependent zero-range force in the pairing channel. Mg-40 and Mg-20, are predicted to be at the two-neutron and two-proton drip lines respectively. A detailed study of the quadrupole deformation properties of all the isotopes shows that the ground stares of Mg-36,Mg-38,Mg-40 are strongly deformed with significantly different deformations for the neutrons and protons, Our study supports the disappearance of the N = 28 shell gap in the Mg and Si isotopes. (C) 1997 Elsevier Science B.V.

引用

收藏

页码：706 / 718

页数：13

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