Nuclear Magnetic Moment of the 57Cu Ground State

Abstract

The nuclear magnetic moment of the ground state of 57Cu has been measured to be 2.00 +/- 0.05 nuclear magnetons (nm) using the beta-NMR technique. Together with the known magnetic moment of the mirror partner 57Ni, the spin extraction value was extracted as -0.78 +/- 0.13. This is the heaviest isospin T=1/2 mirror pair above the 40Ca region, for which both ground state magnetic moments have been determined. Shell model calculations in full fp shell giving mu(57Cu)~2.4 nm and <sigma_z> ~0.5 imply significant shell breaking at 56Ni with the neutron number N=28.

4 pages, 3 figures, accepted in PRL

Cited by in corpus (10)

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• Neutron spectroscopic factors of Ni isotopes from transfer reactions
• Beta decay of Neutron-Rich 53-56Ca
• $\mathcal{F}t$ values of the mirror $\beta$ transitions and the weak magnetism induced current in allowed nuclear $\beta$ decay
• Doubly-magic nature of 56Ni: measurement of the ground state nuclear magnetic dipole moment of 55Ni
• Fast switching NMR system for measurements of ground-state quadrupole moments of short-lived nuclei
• Nuclear spin polarization following intermediate-energy heavy-ion reactions
• Ratio of Isoscalar to Isovector Core Polarization for Magnetic Moments