Experimental determination of an ${I}^{\ensuremath{\pi}}={2}^{\ensuremath{-}}$ ground state in $^{72,74}\mathrm{Cu}$

Rapid Communication

Experimental determination of an $I^{π} = 2^{-}$ ground state in ${}^{72, 74}{Cu}$

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. Nörtershäuser, M. Schug, H. H. Stroke, and D. T. Yordanov

Phys. Rev. C 82, 041302(R) – Published 13 October 2010

Abstract

This article reports on the ground-state spin and moments measured in ${}^{72, 74}{Cu}$ using collinear laser spectroscopy at the CERN On-Line Isotope Mass Separator (ISOLDE) facility. From the measured hyperfine coefficients, the nuclear observables $μ$ ( $^{72} Cu) = - 1.3472 (10) μ_{N}$ , $μ (^{74} Cu) = - 1.068 (3) μ_{N}$ , $Q (^{72} Cu) = + 8 (2) {efm}^{2}$ , $Q (^{74} Cu) = + 26 (3) {efm}^{2}$ , $I (^{72} Cu) = 2$ , and $I (^{74} Cu) = 2$ have been determined. Through a comparison of the measured magnetic moments with different models, the negative moment reveals a strong $π f_{5 / 2} \otimes ν g_{9 / 2}$ component in the ground-state wave function. Consequently, a negative parity has been assigned to the ground states of ${}^{72, 74}{Cu}$ . Large-scale shell-model calculations illustrate the strong sensitivity of the nuclear moments to configuration mixing and to the effective interaction employed.

Received 20 August 2010

DOI:https://doi.org/10.1103/PhysRevC.82.041302

Authors & Affiliations

K. T. Flanagan^1,2, P. Vingerhoets¹, M. L. Bissell¹, K. Blaum³, B. A. Brown⁴, B. Cheal⁵, M. De Rydt¹, D. H. Forest⁶, Ch. Geppert^7,8, M. Honma⁹, M. Kowalska¹⁰, J. Krämer¹¹, A. Krieger¹¹, E. Mané⁵, R. Neugart¹¹, G. Neyens¹, W. Nörtershäuser^7,11, M. Schug³, H. H. Stroke¹², and D. T. Yordanov³

¹Instituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, Belgium
²IPN Orsay, F-91940 Orsay Cedex, France
³Max-Planck-Institute für Kernphysik, D-69117 Heidelberg, Germany
⁴National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824-1321, USA
⁵School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, UK
⁶School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, UK
⁷GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
⁸Physikalisches Institut, Universität Tübingen, D-72076 Tübingen, Germany
⁹Center for Mathematical Sciences, University of Aizu, Tsuruga, Japan
¹⁰Physics Department, CERN, CH-1211 Geneva 23, Switzerland
¹¹Institut für Kernchemie, Johannes Gutenberg Universität Mainz, D-55128 Mainz, Germany
¹²Department of Physics, New York University, New York, New York 10003, USA

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 82, Iss. 4 — October 2010

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review C

covering nuclear physics

Experimental determination of an $I^{π} = 2^{-}$ ground state in ${}^{72, 74}{Cu}$

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. Nörtershäuser, M. Schug, H. H. Stroke, and D. T. Yordanov

Phys. Rev. C 82, 041302(R) – Published 13 October 2010

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Physical Review C

covering nuclear physics

Experimental determination of an Iπ=2− ground state in Cu72,74

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. Nörtershäuser, M. Schug, H. H. Stroke, and D. T. Yordanov

Phys. Rev. C 82, 041302(R) – Published 13 October 2010

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Figure 3

Figure 4

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

Experimental determination of an $I^{π} = 2^{-}$ ground state in ${}^{72, 74}{Cu}$