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.

该项目的研究支持包括核结构理论的一系列主题，并应用于新的实验结果，核天体物理学和原子核中的基本相互作用。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？核的性质是如何从核子-核子相互作用中显现出来的？将开发、应用和向其他用户提供核结构理论的计算工具。这些工具与实验数据库集成，用于评估和测试。该项目支持的研究生将有独特的机会进行培训，并为核理论的高调研究做出贡献。 组态相互作用（CI）的方法，包括同位旋非收敛部分的核子-核子相互作用的哈密顿量将被开发。将用于核天体物理学的具体项目包括能级密度，β衰变强度函数和能量密度泛函（EDF）。EDF项目使人们能够将中子皮等核性质与中子星的性质联系起来。许多项目与稀有同位素束设施的实验方案协调进行。这种合作对于最大限度地发挥将于2022年春季开始的FRIB设施实验的发现潜力非常重要。部分计算工具被用于高中和大学生教育的教育项目。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估而被认为值得支持。

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.

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.

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.

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.