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.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 25 October 2001 / Accepted: 28 February 2002
Rights and permissions
About this article
Cite this article
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
Issue Date:
DOI: https://doi.org/10.1140/epja/iepja1320