Nuclear Structure Theory and its Applications to Nuclear Properties, Astrophysics and Fundamental Physics

核结构理论及其在核性质、天体物理学和基础物理学中的应用

• 批准号: 2110365
• 负责人: B. Alex Brown
• 金额: $ 33万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2025-01-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2110365&HistoricalAwards=false
• 关键词: Nuclear; Structure; Theory; its; Applications

The research support by this project encompasses a range of topics in nuclear structure theory with applications to new experimental results, nuclear astrophysics, and fundamental interactions in nuclei. This research relates to broad questions in science including: What are the limits of nuclear stability? How did the chemical evolution of the universe proceed? What are the masses of the neutrinos? How do the nuclear properties emerge from the underlying nucleon-nucleon interactions? Computational tools for nuclear structure theory will be developed, applied and made available to other users. These tools are integrated with experimental data bases for evaluation and testing. The graduate students supported by this project will have unique opportunities to train and contribute to high-profile research in nuclear theory. Hamiltonians for the configuration-interaction (CI) method that include isospin-nonconverging parts of the nucleon-nucleon interaction will be developed. Specific projects that will be used for nuclear astrophysics include those for level densities, beta decay strength functions, and energy density functionals (EDF). The EDF project enables one to connect nuclear properties such as the neutron skin to properties of neutron stars. Many of the projects are in coordination with the experimental program at the Facility for Rare Isotope Beams (FRIB). This collaboration is important for maximizing the discovery potential of experiments at the FRIB facility that will start in the Spring of 2022. Some of the computational tools are adopted for educational projects that are used for the education for high-school and undergraduate students.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

本项目支持的研究包括核结构理论与新实验结果的应用、核天体物理学和核内基本相互作用等一系列主题。这项研究涉及广泛的科学问题，包括：核稳定性的极限是什么？宇宙的化学演化是如何进行的？中微子的质量是多少？核性质是如何从基本的核子-核子相互作用中产生的？核结构理论的计算工具将被开发、应用并提供给其他用户。这些工具与用于评估和测试的实验数据库相结合。该项目支持的研究生将有独特的机会接受训练，并为高知名度的核理论研究做出贡献。将开发包含核子-核子相互作用的同位旋非收敛部分的组态相互作用（CI）方法的哈密顿量。将用于核天体物理学的具体项目包括水平密度、衰变强度函数和能量密度函数（EDF）。EDF项目使人们能够将中子表皮等核特性与中子星的特性联系起来。许多项目都是与稀有同位素束流设施（FRIB）的实验计划协调进行的。这项合作对于最大限度地发挥将于2022年春季启动的FRIB设施的实验发现潜力非常重要。一些计算工具被用于教育项目，用于高中和本科生的教育。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Measurement of the B(E2↑) strengths of Ca36 and Ca38

Ca36 和 Ca38 的 B(E2�) 强度测量

• DOI: 10.1103/physrevc.107.034306
• 发表时间: 2023
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: Dronchi, N.;Weisshaar, D.;Brown, B. A.;Gade, A.;Charity, R. J.;Sobotka, L. G.;Brown, K. W.;Reviol, W.;Bazin, D.;Farris, P. J.
• 通讯作者: Farris, P. J.

Probing spin-isospin excitations in proton-rich nuclei via the C11(p,n)N11 reaction

通过 C11(p,n)N11 反应探测富质子核中的自旋-同位旋激发

• DOI: 10.1103/physrevc.106.054323
• 发表时间: 2022
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: Schmitt, J.;King, G. B.;Zegers, R. G.;Ayyad, Y.;Bazin, D.;Brown, B. A.;Carls, A.;Chen, J.;Davis, A.;DeNudt, M.
• 通讯作者: DeNudt, M.

Large collectivity in 29Ne at the boundary of the island of inversion

逆温岛边界处 29Ne 的大集合

• DOI: 10.1016/j.physletb.2023.137704
• 发表时间: 2023
• 期刊: Physics Letters B
• 影响因子: 4.4
• 作者: Revel, A.;Wu, J.;Iwasaki, H.;Ash, J.;Bazin, D.;Brown, B.A.;Chen, J.;Elder, R.;Farris, P.;Gade, A.
• 通讯作者: Gade, A.

β+ Gamow-Teller Strengths from Unstable O14 via the (d,He2) Reaction in Inverse Kinematics

不稳定 O14 通过逆运动学中 (d,He2) 反应的 β Gamow-Teller 强度

• DOI: 10.1103/physrevlett.130.232301
• 发表时间: 2023
• 期刊: Physical Review Letters
• 影响因子: 8.6
• 作者: Giraud, S.;Zamora, J. C.;Zegers, R. G. T.;Bazin, D.;Ayyad, Y.;Bacca, S.;Beceiro-Novo, S.;Brown, B. A.;Carls, A.;Chen, J.
• 通讯作者: Chen, J.

Quadrupole and octupole collectivity in the semi-magic nucleus 80206 Hg126

半魔核80206 Hg126中的四极和八极集体

• DOI: 10.1016/j.physletb.2023.137675
• 发表时间: 2023
• 期刊: Physics Letters B
• 影响因子: 4.4
• 作者: Morrison, L.;Hadyńska-Klȩk, K.;Podolyák, Zs.;Gaffney, L.P.;Zielińska, M.;Brown, B.A.;Grawe, H.;Stevenson, P.D.;Berry, T.;Boukhari, A.
• 通讯作者: Boukhari, A.