Excitation Energies of Superdeformed States in {sup 196}Pb: Towards a Systematic Study of the Second Well in Pb Isotopes

Journal Article · Fri Oct 28 00:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.182501· OSTI ID:20699490

Wilson, A N ^[1]; Singh, A K; Huebel, H; Rossbach, D; Schonwasser, G ^[2]; Davidson, P M; Dracoulis, G D; Lane, G J ^[1]; Goergen, A ^[2]; Korichi, A; Hannachi, F; Lopez-Martens, A ^[3]; Astier, A ^[4]; Azaiez, F; Bourgeois, C ^[5]; Bazzacco, D; Kroell, T; Rossi-Alvarez, C ^[6]; Buforn, N; Redon, N ^[7]

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1. Department of Nuclear Physics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200 (Australia)
2. Institut fuer Strahlen- und Kernphysik, Universitaet Bonn, Nussallee 14-16, D-53115 Bonn (Germany)
3. CSNSM-Orsay, IN2P3/CNRS, F-91405 Orsay Campus (France)
4. IPN Lyon, IN2P3/CNRS, Univ. Lyon-1, F-69622 Villeurbanne Cedex (France)
5. IPN Orsay, IN2P3/CNRS, F-91406 Orsay (France)
6. Dipartimento di Fisica e INFN, Sezione di Padova, 1-35131 Padova (Italy)
7. IPN Lyon, IN2P3/CNRS, Univ. Lyon-1, F-69622 Villeurbanne Cedex (France); and others

The excitation energy of the lowest-energy superdeformed band in {sup 196}Pb is established using the techniques of time-correlated {gamma}-ray spectroscopy. Together with previous measurements on {sup 192}Pb and {sup 194}Pb, this result allows superdeformed excitation energies, binding energies, and two-proton and two-neutron separation energies to be studied systematically, providing stringent tests for current nuclear models. The results are examined for evidence of a 'superdeformed shell gap'.

• OSTI ID: 20699490
• Journal Information: Physical Review Letters, Vol. 95, Issue 18; Other Information: DOI: 10.1103/PhysRevLett.95.182501; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
EXCITATION
GAMMA SPECTROSCOPY
LEAD 192
LEAD 194
LEAD 196
NEUTRON SEPARATION ENERGY
PROTONS
SHELL MODELS
SUPERDEFORMED NUCLEI