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Intermediate-energy Coulomb excitation of 58,60,62Cr: The onset of collectivity toward N=40

T. Baugher, A. Gade, R. V. F. Janssens, S. M. Lenzi, D. Bazin, B. A. Brown, M. P. Carpenter, A. N. Deacon, S. J. Freeman, T. Glasmacher, G. F. Grinyer, F. G. Kondev, S. McDaniel, A. Poves, A. Ratkiewicz, E. A. McCutchan, D. K. Sharp, I. Stefanescu, K. A. Walsh, D. Weisshaar, and S. Zhu
Phys. Rev. C 86, 011305(R) – Published 26 July 2012; Erratum Phys. Rev. C 86, 049902 (2012)

Abstract

Intermediate-energy Coulomb excitation measurements were performed on the neutron-rich isotopes 58,60,62Cr. The electric quadrupole excitation strengths, B(E2; 01+21+), of 60,62Cr are determined for the first time. The results quantify the trend of increasing quadrupole collectivity in the Cr isotopes approaching neutron number N=40. The results are confronted with large-scale shell-model calculations in the fpgd shell using the state-of-the-art LNPS effective interaction. Different sets of effective charges are discussed that provide an improved and robust description of the B(E2) values of the neutron-rich Fe and Cr isotopes in this region of rapid shell evolution. The ratio of the neutron and proton transition matrix elements, |Mn/Mp|, is proposed as an effective tool to discriminate between the various choices of effective charges.

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  • Received 16 May 2012

DOI:https://doi.org/10.1103/PhysRevC.86.011305

©2012 American Physical Society

Erratum

Erratum: Intermediate-energy Coulomb excitation of 58,60,62Cr: The onset of collectivity toward N=40 [Phys. Rev. C 86, 011305(R) (2012)]

T. Baugher, A. Gade, R. V. F. Janssens, S. M. Lenzi, D. Bazin, B. A. Brown, M. P. Carpenter, A. N. Deacon, S. J. Freeman, T. Glasmacher, G. F. Grinyer, F. G. Kondev, S. McDaniel, A. Poves, A. Ratkiewicz, E. A. McCutchan, D. K. Sharp, I. Stefanescu, K. A. Walsh, D. Weisshaar, and S. Zhu
Phys. Rev. C 86, 049902 (2012)

Authors & Affiliations

T. Baugher1,2,*, A. Gade1,2, R. V. F. Janssens3, S. M. Lenzi4, D. Bazin1, B. A. Brown1,2, M. P. Carpenter3, A. N. Deacon5, S. J. Freeman5, T. Glasmacher1,2, G. F. Grinyer1,†, F. G. Kondev3, S. McDaniel1,2, A. Poves6, A. Ratkiewicz1,2, E. A. McCutchan3, D. K. Sharp5, I. Stefanescu3, K. A. Walsh1,2, D. Weisshaar1, and S. Zhu3

  • 1National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
  • 2Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
  • 3Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 4Dipartimento di Fisica e Astronomia dell'Università and INFN, Sezione di Padova, I-35131 Padova, Italy
  • 5School of Physics and Astronomy, Schuster Laboratory, University of Manchester, Manchester M13 9PL, United Kingdom
  • 6Departamento de Física Teórica e IFT-UAM/CSIC, Universidad Autónoma de Madrid, E-28049 Madrid, Spain

  • *baugher@nscl.msu.edu
  • Present address: Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France.

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Vol. 86, Iss. 1 — July 2012

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