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

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The Z=82 shell closure in neutron deficient Pb isotopes

M. Bender
(
- Darmstadt, GSI
)
,
T. Cornelius
(
- Frankfurt U.
)
,
G.A. Lalazissis
(
- Thessaloniki U. and
- Oak Ridge
)
,
J.A. Maruhn
(
- Frankfurt U. and
- Oak Ridge
)
,
W. Nazarewicz
(
- Tennessee U. and
- Warsaw U. and
- Oak Ridge
)

Oct, 2001

6 pages

Published in:

Eur.Phys.J.A 14 (2002) 23-28

e-Print:

nucl-th/0110057 [nucl-th]

DOI:

10.1007/s10050-002-8785-2

View in:

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Abstract:

Recent mass measurements show a substantial weakening of the binding energy difference delta_{2p} (Z,N) = E(Z-2,N) - 2 E(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 the 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 Hg and Po isotopes.

Note:

submitted to Eur. Phys. J. A

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