Configurations of superdeformed bands in Pb-193

L Ducroux, A Astier, R Duffait, Y LeCoz, M Meyer, S Perries, N Redon, J F SharpeySchafer, A N Wilson, B J P Gall, R Collatz, I Deloncle, F Hannachi, A LopezMartens, M G Porquet, C Schuck, F Azaiez, S Bouneau, C Bourgeois, A KorichiN Poffe, H Sergolle, R Lucas, V Meot, I Hibbert, R Wadsworth

Research output: Contribution to journalArticlepeer-review

Abstract

The six superdeformed bands in Pb-193 have been studied with the EUROGAM 2 gamma-ray spectrometer using the Er-168(Si-30,5n) Pb-193 reaction. The results are discussed in terms of cranked-Hartree-Fock-Bogolioubov-Lipkin-Nogami calculations. From the F-(2) moment of inertia behavior as function of the rotational frequency and the M1 and E2 decay competition of the superdeformed states, the bands are interpreted as three pairs of signature partners based on quasineutron excitations. Dipole transitions linking two signature partner superdeformed bands have been observed and, for the first time in lead isotopes, the branching ratio B(M1)/B(E2)=0.15+/-0.04 mu(N)(2)/e(2)b(2)b(2) has been extracted.

Original languageEnglish
Pages (from-to)2701-2708
Number of pages8
JournalPhysical Review C
Volume53
Issue number6
Publication statusPublished - Jun 1996

Keywords

  • EVEN-EVEN NUCLEI
  • SHAPE ISOMERISM
  • STATES
  • SPIN
  • MOMENTS

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