三维晶格曲柄协变密度泛函理论中 $${^{144}\textrm{Ba}}$ 的八极集合的稳健性

IF 3.6 1区物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Science and Techniques Pub Date : 2024-08-07 DOI:10.1007/s41365-024-01532-z

Ze-Kai Li, Yuan-Yuan Wang

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引用次数: 0

摘要

利用三维晶格空间中的克兰金协变密度泛函理论研究了八极双魔核${^{144}\textrm{Ba}}$中的八极变形和集合性。根据微观计算的电八极矩，首次在半经典近似中实现了还原 B(E3) 过渡概率。现有数据，包括 I-$\omega$ 关系和电过渡概率 B(E2) 和 B(E3) 都得到了很好的再现。此外，研究还表明，{^{144}\textrm{Ba}}\的基态表现出轴向八极和四极变形，这种变形一直持续到高自旋（$I\approx 24\hbar$.

本文章由计算机程序翻译，如有差异，请以英文原文为准。

$Robustness of the octupole collectivity in $${^{144}\textrm{Ba}}$$ within the cranking covariant density functional theory in 3D lattice$

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Robustness of the octupole collectivity in $${^{144}\textrm{Ba}}$$ within the cranking covariant density functional theory in 3D lattice

The octupole deformation and collectivity in octupole double-magic nucleus ${^{144}\textrm{Ba}}$ are investigated using the Cranking covariant density functional theory in a three-dimensional lattice space. The reduced B(E3) transition probability is implemented for the first time in semiclassical approximation based on the microscopically calculated electric octupole moments. The available data, including the I-$\omega$ relation and electric transitional probabilities B(E2) and B(E3) are well reproduced. Furthermore, it is shown that the ground state of ${^{144}\textrm{Ba}}$ exhibits axial octupole and quadrupole deformations that persist up to high spins ($I\approx 24\hbar$).

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来源期刊

Nuclear Science and Techniques 物理-核科学技术

CiteScore

5.10

自引率

39.30%

发文量

141

审稿时长

5 months

期刊介绍： Nuclear Science and Techniques (NST) reports scientific findings, technical advances and important results in the fields of nuclear science and techniques. The aim of this periodical is to stimulate cross-fertilization of knowledge among scientists and engineers working in the fields of nuclear research. Scope covers the following subjects: • Synchrotron radiation applications, beamline technology; • Accelerator, ray technology and applications; • Nuclear chemistry, radiochemistry, radiopharmaceuticals, nuclear medicine; • Nuclear electronics and instrumentation; • Nuclear physics and interdisciplinary research; • Nuclear energy science and engineering.