Unbound spectra of neutron-rich oxygen isotopes predicted by the Gamow shell model

被引：33

作者：

Li, J. G. ^{[1
,2
]}

Michel, N. ^{[3
,4
]}

Zuo, W. ^{[3
,4
]}

Xu, F. R. ^{[1
,2
]}

机构：

[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

[2] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[3] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

[4] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China

来源：

PHYSICAL REVIEW C | 2021年 / 103卷 / 03期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

STATES; FORCES;

D O I：

10.1103/PhysRevC.103.034305

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：

The Gamow shell model has shown to efficiently describe weakly bound and unbound nuclear systems, as internucleon correlations and continuum coupling are both taken into account in this model. In the present work, we study neutron-dripline oxygen isotopes. It is hereby demonstrated that the presence of continuum coupling is important for the description of oxygen isotopes at dripline, and especially to assess the eventual bound or unbound character of O-28. Our results suggest that the ground state of O-28 is weakly unbound and is similar to O24-26 the narrow resonant O-26 ground state. Predictions of weakly bound and resonance excited states in are also provided. The asymptotes of the studied many-body states are analyzed via one-body densities, whereby the different radial properties of well bound, loosely bound, resonance states are clearly depicted.

引用

页数：8

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