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

被引：36
作者：
Bender, M
Cornelius, T
Lalazissis, GA
Maruhn, JA
Nazarewicz, W
Reinhard, PG
机构：
[1] Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany
[2] Goethe Univ Frankfurt, Inst Theoret Phys, D-60325 Frankfurt, Germany
[3] Aristotle Univ Thessaloniki, Dept Theoret Phys, GR-54006 Thessaloniki, Greece
[4] Oak Ridge Natl Lab, Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA
[5] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA
[6] Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland
[7] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA
[8] Univ Erlangen Nurnberg, Inst Theoret Phys 2, D-91058 Erlangen, Germany
来源：
EUROPEAN PHYSICAL JOURNAL A | 2002年 / 14卷 / 01期
关键词：
D O I：
10.1140/epja/iepja1320
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Recent mass measurements show a substantial weakening of the binding-energy difference delta(2p)(Z, N) = E(Z - 2, N) - 2E(Z, N) + E(Z + 2, N) in the neutron-deficient Pb isotopes. As delta(2p) is often attributed to the size of the proton magic gap. it might be speculated that reduction in delta(2p) 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 fig and Po isotopes.
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页码：23 / 28
页数：6
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