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Experimental determination of an Iπ=2- ground state in 72,74Cu

Abstract : This article reports on the ground-state spin and moments measured in 72,74Cu using collinear laser spectroscopy at the CERN On-Line Isotope Mass Separator (ISOLDE) facility. From the measured hyperfine coefficients, the nuclear observables μ(72Cu)=-1.3472(10)μN, μ(74Cu)=-1.068(3)μN, Q(72Cu)=+8(2) efm2, Q(74Cu)=+26(3) efm2, I(72Cu)=2, and I(74Cu)=2 have been determined. Through a comparison of the measured magnetic moments with different models, the negative moment reveals a strong πf5/2⊗νg9/2 component in the ground-state wave function. Consequently, a negative parity has been assigned to the ground states of 72,74Cu. Large-scale shell-model calculations illustrate the strong sensitivity of the nuclear moments to configuration mixing and to the effective interaction employed.
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Contributor : Sophie Heurteau <>
Submitted on : Monday, November 8, 2010 - 10:58:14 AM
Last modification on : Tuesday, December 1, 2020 - 6:42:04 PM

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K.T. Flanagan, P. Vingerhoets, M. L. Bissell, K. Blaum, B. A. Brown, et al.. Experimental determination of an Iπ=2- ground state in 72,74Cu. Physical Review C, American Physical Society, 2010, 82, pp.041302. ⟨10.1103/PhysRevC.82.041302⟩. ⟨in2p3-00533691⟩



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