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Phys. Rev. Lett. 96, 112503 (2006) [4 pages]

Probing Shell Structure and Shape Changes in Neutron-Rich Sulfur Isotopes through Transient-Field g-Factor Measurements on Fast Radioactive Beams of 38S and 40S.

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A. D. Davies1,2, A. E. Stuchbery3, P. F. Mantica1,4, P. M. Davidson3, A. N. Wilson3,5, A. Becerril1,2, B. A. Brown1,2, C. M. Campbell1,2, J. M. Cook1,2, D. C. Dinca1,2, A. Gade1, S. N. Liddick1,4, T. J. Mertzimekis1, W. F. Mueller1, J. R. Terry1,2, B. E. Tomlin1,4, K. Yoneda1, and H. Zwahlen1,2
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
3Department of Nuclear Physics, The Australian National University, Canberra, ACT 0200, Australia
4Department of Chemistry, Michigan State University, East Lansing, Michigan 48824 USA
5Department of Physics, The Australian National University, Canberra, ACT 0200, Australia

Received 11 December 2005; published 24 March 2006

The shell structure underlying shape changes in neutron-rich nuclei near N=28 has been investigated by a novel application of the transient-field technique to measure the first-excited-state g factors in 38S and 40S produced as fast radioactive beams. There is a fine balance between proton and neutron contributions to the magnetic moments in both nuclei. The g factor of deformed 40S does not resemble that of a conventional collective nucleus because spin contributions are more important than usual.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.112503
DOI:
10.1103/PhysRevLett.96.112503
PACS:
21.10.Ky, 21.60.Cs, 27.30.+t, 27.40.+z
 
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