Electromagnetic Properties of Nuclei with 50 Neutrons

ORAL

Abstract


The nuclei with 50 neutrons that lie between 78Ni and 100Sn have provided benchmark studies of the nuclear shell model. We have recently developed new Hamiltonians for protons in the (0f5/2, 1p3/2, 1p1/2, 0g9/2) model space [1]. These were obtained with the singular-value decomposition (SVD) method starting with Hamiltonians based on the VS-IMSRG method with two- and three-nucleon interactions [2]. We used IMSRG input based on the standard approximation (p35-i2) [2], as well one based on a new approach for the intermediate three-body operators (p35-i3) [3]. Here we will present results for electromagnetic properties: magnetic moments, quadrupole moments and B(E2) values. The results of the calculations are compared to experiment. We compare results obtained from various Hamiltonians to asses the theoretical uncertainties.

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Publication: [1] J. A. Purcell, B. A. Brown, B. C. He, S. R. Stroberg, and W. B. Walters,
Phys. Rev. C 111, 044313 (2025).

[2] S. R. Stroberg, H. Hergert, S. K. Bogner, and J. D. Holt,
Annu. Rev. Nucl. Part. Sci. 2019. 69, 307 (2019).

[3] B. C. He and S. R. Stroberg, Phys. Rev. C 110, 044317 (2024).

Presenters

  • Jordan Alan Purcell

    Facility for Rare Isotope Beams

Authors

  • Jordan Alan Purcell

    Facility for Rare Isotope Beams

  • Alex Brown

    Facility for Rare Isotope Beams, Michigan State University, FRIB