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Phys. Rev. Lett. 95, 022502 (2005) [4 pages]

Quadrupole Deformation of the Self-Conjugate Nucleus 72Kr

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A. Gade1, D. Bazin1, A. Becerril1,2, C. M. Campbell1,2, J. M. Cook1,2, D. J. Dean3, D.-C. Dinca1,2, T. Glasmacher1,2, G. W. Hitt1,2, M. E. Howard4, W. F. Mueller1, H. Olliver1,2, J. R. Terry1,2, and K. Yoneda1
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, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
4Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA

 See Also: Erratum

Received 7 February 2005; published 7 July 2005

We report on the first determination of the absolute B(E2;01+→21+) excitation strength in the N=Z nucleus 72Kr. 72Kr is the heaviest N=Z nucleus for which this quantity has been measured and provides a benchmark in a region of the nuclear chart dominated by rapidly changing deformations and shapes mediated by the interplay of strongly oblate and prolate-driving orbitals. The deduced quadrupole deformation strength is in agreement with a variety of self-consistent models that predict an oblate shape for the ground state of 72Kr. Large-scale shell-model Monte Carlo calculations reproduce the experimental B(E2) value and link the result to the occupation of the deformation-driving g9/2 orbit.


©2005 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.95.022502
DOI: 10.1103/PhysRevLett.95.022502
PACS: 21.10.Ft, 25.70.De, 25.70.Mn, 27.50.+e

See Also

Erratum: A. Gade, D. Bazin, A. Becerril, C. M. Campbell, J. M. Cook, D. J. Dean, D.-C. Dinca, T. Glasmacher, G. W. Hitt, M. E. Howard, W. F. Mueller, H. Olliver, J. R. Terry, and K. Yoneda, Erratum: Quadrupole Deformation of the Self-Conjugate Nucleus 72Kr [Phys. Rev. Lett. 95, 022502 (2005)], Phys. Rev. Lett. 96, 189901 (2006)

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