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The Z = 82 shell closure in neutron-deficient Pb isotopes

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Abstract:

Recent mass measurements show a substantial weakening of the binding-energy difference δ2p(Z, N) = E(Z - 2, N) - 2E(Z, N) + E(Z + 2, N) in the neutron-deficient Pb isotopes. As δ2p is often attributed to the size of the proton magic gap, it might be speculated that reduction in δ2p is related to a weakening of the spherical Z = 82 shell. We demonstrate that the observed trend is described quantitatively by self-consistent mean-field models in terms of deformed ground states of Hg and Po isotopes.

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Authors and Affiliations

  1. Gesellschaft für Schwerionenforschung, Planckstrasse 1, D-64291 Darmstadt, Germany, , , , , , DE

    M. Bender

  2. Institut für Theoretische Physik, Universität Frankfurt, Robert-Mayer-Strasse 8-10, D-60325 Frankfurt am Main, Germany, , , , , , DE

    T. Cornelius & J.A. Maruhn

  3. Department of Theoretical Physics, Aristotle University of Thessaloniki, Gr-54006 Thessaloniki, Greece, , , , , , GR

    G.A. Lalazissis

  4. Joint Institute for Heavy-Ion Research, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831, USA, , , , , , US

    P.-G. Reinhard

  5. Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996, USA, , , , , , US

    W. Nazarewicz

Authors
  1. M. Bender
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  2. T. Cornelius
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  3. G.A. Lalazissis
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  4. J.A. Maruhn
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  5. W. Nazarewicz
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  6. P.-G. Reinhard
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Additional information

Received: 25 October 2001 / Accepted: 28 February 2002

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Bender, M., Cornelius, T., Lalazissis, G. et al. The Z = 82 shell closure in neutron-deficient Pb isotopes. Eur Phys J A 14, 23–28 (2002). https://doi.org/10.1140/epja/iepja1320

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  • DOI: https://doi.org/10.1140/epja/iepja1320

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