Shape Coexistence in Pb Nuclei Probed by Static Electromagnetic Moments

Journal Article · Wed Apr 26 04:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2200939· OSTI ID:20798547

Ionescu-Bujor, M; Iordachescu, A; Bucurescu, D; Suliman, G ^[1]; Marginean, N; Rusu, C ^[1]; Ur, C A ^[1]; Balabanski, D L ^[2]; Bazzacco, D; Brandolini, F; Pavan, P; Rossi Alvarez, C ^[3]; Chmel, S; Huebel, H ^[4]; De Poli, M ^[5]; Medina, N H; Ribas, R V ^[6]; Neyens, G ^[7]

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1. National Institute for Physics and Nuclear Engineering, Bucharest (Romania)
2. Dipartimento di Fisica, Universita di Camerino, Camerino (Italy)
3. Dipartimento di Fisica dell'Universita, Padova (Italy)
4. Helmholtz-Institute fuer Strahlen- und Kernphysik, Universitaet Bonn (Germany)
5. INFN, Laboratori Nazionali di Legnaro, Legnaro (Italy)
6. Instituto di Fisica, Universidade' de Sao Paulo, Sao Paulo (Brazil)
7. IKS, University of Leuven, B-3001 Leuven (Belgium)

Spectroscopic quadrupole moment measurements for high-spin isomeric states in 192,193,194Pb nuclei have been performed by the time-differential perturbed {gamma}-ray angular distribution method. The quadrupole moments of the isomers described by quasineutron configurations in neutron-deficient Pb nuclei are well reproduced by the pairing plus quadrupole model, which predicts for these states a very small prolate deformation {beta}2 {approx_equal}0.02. The quadrupole moment of the 11- isomeric state in 192Pb involving the {pi}(3s{sub 1/2}{sup -2} 1h{sub 9/2} 1i{sub 13/2}) configuration corresponds to a deformation {beta}2=-0.11(1). The quadrupole moments of the proton intruder states in Pb nuclei are compared with theoretical predictions of tilted-axis cranking, mean-field and interacting boson models.

• OSTI ID: 20798547
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 831; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
GAMMA RADIATION
GAMMA SPECTROSCOPY
HIGH SPIN STATES
INTERACTING BOSON MODEL
ISOMERIC NUCLEI
LEAD 192
LEAD 193
LEAD 194
MEAN-FIELD THEORY
NEUTRONS
NUCLEAR DEFORMATION
NUCLEAR ELECTRIC MOMENTS
PROTONS
QUADRUPOLE MOMENTS
QUADRUPOLES
SPIN