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孙向向, 周善贵. 变形晕核中的形状退耦合及转动激发[J]. 原子核物理评论, 2024, 41(1): 75-85. DOI: 10.11804/NuclPhysRev.41.2023CNPC56
引用本文: 孙向向, 周善贵. 变形晕核中的形状退耦合及转动激发[J]. 原子核物理评论, 2024, 41(1): 75-85. DOI: 10.11804/NuclPhysRev.41.2023CNPC56
Xiangxiang SUN, Shangui ZHOU. Shape Decoupling Effects and Rotation of Deformed Halo Nuclei[J]. Nuclear Physics Review, 2024, 41(1): 75-85. DOI: 10.11804/NuclPhysRev.41.2023CNPC56
Citation: Xiangxiang SUN, Shangui ZHOU. Shape Decoupling Effects and Rotation of Deformed Halo Nuclei[J]. Nuclear Physics Review, 2024, 41(1): 75-85. DOI: 10.11804/NuclPhysRev.41.2023CNPC56

变形晕核中的形状退耦合及转动激发

Shape Decoupling Effects and Rotation of Deformed Halo Nuclei

  • 摘要: 随着放射性核束物理的快速发展,在远离\beta稳定线的原子核中发现或者预言了很多奇特现象,包括集团结构、壳结构演化、变形晕、变形晕核中形状退耦合等。对这些奇特核现象的研究是当前核物理的重要前沿领域。协变密度泛函理论(CDFT)是描述核素图上几乎所有原子核性质最成功的微观方法之一。在CDFT下,为了恰当地处理形变效应和奇特原子核的弱束缚特性,发展了包含连续谱的变形相对论性Hartree-Bogoliubov理论(deformed relativistic Hartree-Bogoliubov theory in continuum, DRHBc)。在本文中,将总结DRHBc理论在奇特核结构研究中的应用以及其扩展。DRHBc理论已用于描述硼、碳、氖、钠和镁同位素链中的变形中子晕现象,并且计算结果符合相关的实验数据。DRHBc质量表合作组正在致力于用该理论构建考虑形变和连续谱效应的高精度原子核质量表。此外,基于DRHBc理论的角动量投影计算表明:在变形晕核的低激发转动态中依然存在晕现象以及形状退耦合现象。

     

    Abstract: With the development of radioactive-ion-beam facilities, many exotic phenomena have been discovered or predicted in the nuclei far from the \beta stability line, including cluster structure, shell structure, deformed halo, and shape decoupling effects. The study of exotic nuclear phenomena is at the frontier of nuclear physics nowadays. The covariant density functional theory (CDFT) is one of the most successful microscopic models in describing the structure of nuclei in almost the whole nuclear chart. Within the framework of CDFT, toward a proper treatment of deformation and weak binding, the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc) has been developed. In this contribution, we review the applications and extensions of the DRHBc theory to the study of exotic nuclei. The DRHBc theory has been used to investigate the deformed halos in B, C, Ne, Na, and Mg isotopes and the theoretical descriptions are reasonably consistent with available data. A DRHBc Mass Table Collaboration has been founded, aiming at a high precision nuclear mass table with deformation and continuum effects included, which is underway. By implementing the angular momentum projection based on the DRHBc theory, the rotational excitations of deformed halos have been investigated and it is shown that the deformed halos and shape decoupling effects also exist in the low-lying rotational excitation states of deformed halo nuclei.

     

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