Eur. Phys. J. A 14, 309-316 (2002)
Count fluctuation analysis in the triaxial strongly deformed potential well ofS.W. Ødegård1, 2, B. Herskind2, T. Døssing2, G.B. Hagemann2, D.R. Jensen2, G. Sletten2, J.N. Wilson2, S. Leoni3, P.O. Tjøm1, P. Bednarczyk4 and D. Curien4
1 Department of Physics, University of Oslo, PB 1048 Blindern, N-0316 Oslo, Norway
2 The Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark
3 Dipartimento di Fisica and INFN, Sezione di Milano, Milano, Italy
4 IReS, 23 rue du Loess, BP28 F-67037, Strasbourg, France
(Received: 4 January 2002 / Revised version: 22 April 2002 Communicated by C. Signorini)
High-spin properties of the triaxial strongly deformed potential well in 163Lu at excitation energies above resolvable bands have been investigated. Gated spectra display clear ridges with moments of inertia corresponding to those observed for the discrete strongly deformed bands. A fluctuation analysis of the ridges yields a number of two-step paths of and , when gating on triaxial strongly or normally deformed bands, respectively. These results show that a potential well at large deformation coexists with the normally deformed well, and indicate a mixing between states in the two wells at higher excitation energy.
21.10.-k - Properties of nuclei; nuclear energy levels.
21.10.Re - Collective levels.
24.60.Ky - Fluctuation phenomena.
27.70.+q - .
© Società Italiana di Fisica, Springer-Verlag 2002