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

K. T. Flanagan; P. Vingerhoets; M. L. Bissell; K. Blaum; B. A. Brown; B. Cheal; M. de Rydt; D. H. Forest; Ch Geppert; M. Honma; M. Kowalska; J. Krämer; A. Krieger; E. Mané; R. Neugart; G. Neyens; W. Nörtershaüser; M. Schug; H. H. Stroke; D. T. Yordanov

doi:10.1103/PhysRevC.82.041302

Experimental determination of an i^π = 2^- ground state in ^72,74Cu

K. T. Flanagan, P. Vingerhoets, M. L. Bissell, K. Blaum, B. A. Brown, B. Cheal, M. de Rydt, D. H. Forest, Ch Geppert, M. Honma, M. Kowalska, J. Krämer, A. Krieger, E. Mané, R. Neugart, G. Neyens, W. Nörtershaüser, M. Schug, H. H. Stroke, D. T. Yordanov

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Abstract

This article reports on the ground-state spin and momentsmeasured 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)μ_N, μ(⁷⁴Cu) =- 1.068(3) μ_N, 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 πf_5/2 ⊗ νg_9/2 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.

Original language	English (US)
Article number	041302
Journal	Physical Review C - Nuclear Physics
Volume	82
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.82.041302
State	Published - 2010

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.82.041302

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Flanagan, K. T., Vingerhoets, P., Bissell, M. L., Blaum, K., Brown, B. A., Cheal, B., de Rydt, M., Forest, D. H., Geppert, C., Honma, M., Kowalska, M., Krämer, J., Krieger, A., Mané, E., Neugart, R., Neyens, G., Nörtershaüser, W., Schug, M., Stroke, H. H., & Yordanov, D. T. (2010). Experimental determination of an i^π = 2^- ground state in ^72,74Cu. Physical Review C - Nuclear Physics, 82(4), Article 041302. https://doi.org/10.1103/PhysRevC.82.041302

Flanagan, KT, Vingerhoets, P, Bissell, ML, Blaum, K, Brown, BA, Cheal, B, de Rydt, M, Forest, DH, Geppert, C, Honma, M, Kowalska, M, Krämer, J, Krieger, A, Mané, E, Neugart, R, Neyens, G, Nörtershaüser, W, Schug, M, Stroke, HH & Yordanov, DT 2010, 'Experimental determination of an i^π = 2^- ground state in ^72,74Cu', Physical Review C - Nuclear Physics, vol. 82, no. 4, 041302. https://doi.org/10.1103/PhysRevC.82.041302

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title = "Experimental determination of an iπ = 2- ground state in 72,74Cu",

abstract = "This article reports on the ground-state spin and momentsmeasured 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.",

author = "Flanagan, {K. T.} and P. Vingerhoets and Bissell, {M. L.} and K. Blaum and Brown, {B. A.} and B. Cheal and {de Rydt}, M. and Forest, {D. H.} and Ch Geppert and M. Honma and M. Kowalska and J. Kr{\"a}mer and A. Krieger and E. Man{\'e} and R. Neugart and G. Neyens and W. N{\"o}rtersha{\"u}ser and M. Schug and Stroke, {H. H.} and Yordanov, {D. T.}",

year = "2010",

doi = "10.1103/PhysRevC.82.041302",

language = "English (US)",

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AU - Flanagan, K. T.

AU - Vingerhoets, P.

AU - Bissell, M. L.

AU - Blaum, K.

AU - Brown, B. A.

AU - Cheal, B.

AU - de Rydt, M.

AU - Forest, D. H.

AU - Geppert, Ch

AU - Honma, M.

AU - Kowalska, M.

AU - Krämer, J.

AU - Krieger, A.

AU - Mané, E.

AU - Neugart, R.

AU - Neyens, G.

AU - Nörtershaüser, W.

AU - Schug, M.

AU - Stroke, H. H.

AU - Yordanov, D. T.

PY - 2010

Y1 - 2010

N2 - This article reports on the ground-state spin and momentsmeasured 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.

AB - This article reports on the ground-state spin and momentsmeasured 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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Experimental determination of an i^π = 2^- ground state in ^72,74Cu

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