首页|相对论密度泛函理论研究晕核的近期进展

相对论密度泛函理论研究晕核的近期进展

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自1985年实验发现晕核11Li以来,奇特原子核中的晕现象一直是核物理研究的重要前沿.相对论密度泛函理论在晕核研究中取得了很大成功,如晕核11Li的自洽描述和形变晕核的微观预言.介绍一些近期基于形变相对论连续谱Hartree-Bogoliubov(DRHBc)理论和三轴相对论连续谱Hartree-Bogoliubov(TRHBc)理论的研究进展.DRHBc理论实现了对形变晕核37Mg的微观自洽描述,再现了它的小中子分离能、大均方根半径、弥散密度分布以及晕中子的p波成分.DRHBc理论还预言了最近发现的核素39Na中的形变中子晕以及N=28闭壳的塌缩.新发展的TRHBc理论研究了铝同位素链,预言最重的奇奇核42A1是三轴形变晕核,并且它的核芯和晕存在三轴层次的新奇形状退耦.
Recent Progress on Halo Nuclei in Relativistic Density Functional Theory
Since the discovery of the halo nucleus 11 Li in 1985,halo phenomena in exotic nuclei have always been an important frontier in nuclear physics research.The relativistic density functional theory has achieved great suc-cess in the study of halo nuclei,e.g.,the self-consistent description of halo nucleus 11 Li and the microscopic predic-tion of deformed halo nuclei.This paper introduces some recent progresses based on the deformed relativistic Hartree-Bogoliubov theory in continuum(DRHBc)and the triaxial relativistic Hartree-Bogoliubov theory in con-tinuum(TRHBc).A microscopic and self-consistent description of the deformed halo nucleus 37Mg,including its small one-neutron separation energy,large root-mean-square radius,diffuse density distribution,and p-wave com-ponents for the halo neutron,has been achieved by the DRHBc theory.The DRHBc theory has also predicted a de-formed neutron halo and the collapse of the N=28 shell closure in the recently discovered isotope 39Na.The TRHBc theory has been newly developed and applied to the aluminum isotopic chain.The heaviest odd-odd 42A1 has been predicted as a triaxial halo nucleus with a novel shape decoupling between its core and halo at the triaxial level.

halo phenomenarelativistic density functional theory37Mg39Na42A1

张开元、潘琮、陈思宇、罗庆金、吴柯岩、向一峰

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中国工程物理研究院核物理与化学研究所,四川绵阳 621900

安徽师范大学物理与电子信息学院,安徽芜湖 241000

晕现象 相对论密度泛函理论 37Mg 39Na 42A1

Natural Science Foundation of Sichuan Province国家自然科学基金资助项目国家自然科学基金资助项目国家自然科学基金资助项目四川省自然科学基金资助项目国家重点研发计划国家重点研发计划

124NSFSC591012305125U2230207U203020924NSFSC59102020YFA04060012020YFA0406002

2024

10.11804/NuclPhysRev.41.2023CNPC28

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中国科学院近代物理研究所，中国核物理学会

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CSTPCD北大核心
影响因子：0.181
ISSN：1007-4627
年,卷(期)：2024.41(1)