Comparative quadrupole moments of triaxial superdeformed states inG. Schönwaßer1, H. Hübel1, G.B. Hagemann2, H. Amro3, R.M. Clark4, M. Cromaz4, R.M. Diamond4, P. Fallon4, B. Herskind2, G. Lane4, W.C. Ma3, A.O. Macchiavelli4, S.W. Ødegå rd5, G. Sletten2, D. Ward4 and J.N. Wilson2
1 Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Nussallee 14-16, D-53115 Bonn, Germany
2 Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark
3 Mississipi State University, Mississipi State, MS 39762, USA
4 Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
5 Department of Physics, University of Oslo, PB 1048 Blindern, N-0316 Oslo, Norway
(Received: 12 August 2002 / Revised version: 16 October 2002 / Published online: 10 December 2002)
Average transition quadrupole moments in the yrast triaxial superdeformed bands of 163Lu, 164Lu and 165Lu were determined in a Doppler-shift attenuation-method experiment. Fractional Doppler shifts were determined in -ray coincidence spectra measured with the Gammasphere array. The transition quadrupole moments derived from these data show a decrease from 163Lu to 165Lu which is not predicted by total-energy surface calculations.
21.10.-k - Properties of nuclei; nuclear energy levels.
21.10.Tg - Lifetimes.
25.70.-z - Low and intermediate energy heavy-ion reactions.
27.70.+q - .
© Società Italiana di Fisica, Springer-Verlag 2002