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arXiv 2108.01631nucl-th
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半幻数N(Z)=40核的结构性质

Structural properties of nuclei with semi-magic number N(Z)=40

R. Sharma, A. Jain, M. Kaushik, S. K. Jain, G. Saxena

摘要:

本文用相对论平均场论的不同族讨论了中子数N(质子数Z)$=$ 40的全等渗(同位素)链的各种基态性质。计算了核子分离能、配对能、形变、半径和核子密度分布等性质,并与实验数据以及其它微观和宏观模型的结果进行了比较。N-$=$ 40等渗链为中子磁性提供了充分的支持,并阐明了最近发现的$^{60}$ Ca和$^{68}$ Ni的双重磁性。我们的结果与最近测得的$^{68}$ Ni [S]的电荷半径值非常一致。Kaufmann \textit{et al.},物理学评论快报。124,132502(2020)],其支持N $=$ 40魔力。Zr同位素(Z $=$ 40)具有多种形状,导致形状转变和形状共存现象。3s $_{1/2}$状态的作用,这将导致中央耗尽,如果未被占用,也进行了研究。发现$^{56}_{16}$ S和$^{122}_{40}$ Zr是双泡核。

英文摘要:

Various ground state properties are explored for full isotonic(isotopic) chain of neutron number N(proton number Z)$=$40 using different families of Relativistic Mean-Field theory. Several properties such as nucleon separation energies, pairing energies, deformation, radii and nucleon density distributions are evaluated and compared with the experimental data as well as those from other microscopic and macroscopic models. N$=$40 isotonic chain presents ample of support for the neutron magicity and articulates double magicity in recently discovered $^{60}$Ca and $^{68}$Ni. Our results are in close conformity with recently measured value of charge radius of $^{68}$Ni [S. Kaufmann \textit{et al.}, Phys. Rev. Lett. 124, 132502 (2020)] which supports the N$=$40 magicity. Contrarily, Zr isotopes (Z$=$40) display variety of shapes leading to the phenomenon of shape transitions and shape co-existence. The role of 3s$_{1/2}$ state, which leads to central depletion if unoccupied, is also investigated. $^{56}_{16}$S and $^{122}_{40}$Zr are found to be doubly bubble nuclei.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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