Elsevier

Physics Letters B

Volume 461, Issue 4, 2 September 1999, Pages 322-328
Physics Letters B

Role of intruder configurations in 26,28Ne and 30,32Mg

https://doi.org/10.1016/S0370-2693(99)00850-3Get rights and content

Abstract

The energies and reduced transition probabilities B(E2;0g.s.+→2+) for the lowest Jπ=2+ excited states in the neutron-rich radioactive isotopes 26,28Ne and 30,32Mg were measured via intermediate energy Coulomb excitation. The data suggest that the interaction between coexisting 0ℏω (normal) and 2ℏω (intruder) configurations significantly perturbs the energy of the 21+ state in 28Ne, while the data on 26Ne and 30Mg can be well understood in the context of 0ℏω configurations alone. Nilsson model calculations suggest that if these nuclei have static axially symmetric deformations, they are prolate.

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Acknowledgements

This work was supported by the National Science Foundation through grants PHY-9523974, PHY-9528844, and PHY-9605207.

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  • Cited by (0)

    1

    Present address: Cyclotron Institute, Texas A&M University, College Station, Texas 77843-3366.

    2

    Permanent address: Nuclear Physics Division, Bhabha Atomic Research Centre, Bombay 400085, India.

    3

    Present address: Max-Planck-Institut für Kernphysik, Postfach 10 39 80, D-69029 Heidelberg, Germany.

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