Abstract:
We report the identification of six new superdeformed (SD) bands in 197,198Pb observed with the EUROBALL IV spectrometer. The results are interpreted in the framework of cranked Hartree-Fock calculations with approximate projection on the particle number by means of the Lipkin-Nogami method. A mixing between quasi-particle excitations and an octupole vibration is suggested in the two SD isotopes. We have estimated the ordering of the neutron valence orbitals and confirm indirectly a N = 118 SD gap.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 20 December 2000 / Accepted: 24 January 2001
Rights and permissions
About this article
Cite this article
Prévost, A., Buforn, N., Astier, A. et al. New excited superdeformed bands in heavy Pb nuclei: Clue for an octupole softness near the N = 118 gap at large deformation. Eur Phys J A 10, 13–19 (2001). https://doi.org/10.1007/s100500170139
Issue Date:
DOI: https://doi.org/10.1007/s100500170139