Ground State Electromagnetic Moments of ${}^{37}$Ca

Abstract

The hyperfine coupling constants of neutron deficient ${}^{37}$Ca were deduced from the atomic hyperfine spectrum of the $4s{}^2{S}_{1/2}$ $\leftrightarrow$ $4p{}^2{P}_{3/2}$ transition in Ca II, measured using the collinear laser spectroscopy technique. The ground-state magnetic-dipole and spectroscopic electric-quadrupole moments were determined for the first time as $\mu =+0.7453(72){\mu }_N$ and $Q=-15(11)$ $e^2$fm${}^2$, respectively. The experimental values agree well with nuclear shell model calculations using the universal sd model-space Hamiltonians versions A and B (USDA/B) in the $sd$-model space with a 95\% probability of the canonical nucleon configuration. It is shown that the magnetic moment of ${}^{39}$Ca requires a larger non-$sd$-shell component than that of ${}^{37}$Ca for good agreement with the shell-model calculation, indicating a more robust closed sub-shell structure of ${}^{36}$Ca at the neutron number $N$ = 16 than ${}^{40}$Ca. The results are also compared to valence-space in-medium similarity renormalization group calculations based on chiral two- and three-nucleon interactions.

References in corpus (10)

• Improved nuclear matter calculations from chiral low-momentum interactions
• A nucleus-dependent valence-space approach to nuclear structure
• Nonperturbative shell-model interactions from the in-medium similarity renormalization group
• Saturation with chiral interactions and consequences for finite nuclei
• In-Medium Similarity Renormalization Group for Open-Shell Nuclei
• Ground and excited states of doubly open-shell nuclei from ab initio valence-space Hamiltonians
• Exploring sd-shell nuclei from two- and three-nucleon interactions with realistic saturation properties
• Ab initio electromagnetic observables with the in-medium similarity renormalization group
• Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of 22Mg
• Ground-State Electromagnetic Moments of Calcium Isotopes

Cited by in corpus (10)

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• Nuclear DFT analysis of electromagnetic moments in odd near doubly magic nuclei
• Testing ab initio nuclear structure in neutron-rich nuclei: lifetime measurements of second 2+ states in 16C and 20O
• Electromagnetic moments of the antimony isotopes ${}^{112-133}$Sb
• Electromagnetic properties of ${}^{21}$O for benchmarking nuclear Hamiltonians
• Ground State Magnetic Dipole Moment of ${}^{40}$Sc
• Precision measurement of the ${}^{43}$Ca${}^{+}$ nuclear magnetic moment