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Lifetimes of triaxial superdeformed states in 163Lu and 164Lu

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Abstract:

Lifetimes of states in the yrast superdeformed bands of 163Lu and 164Lu were determined in a Doppler-shift attenuation-method experiment. From fractional Doppler shifts and line shapes, average transition quadrupole moments, Q t = 8.2-0.6 +1.0 b and 7.1-0.6 +0.5 b, were deduced for one of the bands in 163Lu and 164Lu, respectively. These values are much larger than the quadrupole moment of the normal-deformed yrast band in 163Yb, Q t = 4.9-0.4 +1.3 b, that was also determined in this experiment. Comparison to cranking calculations indicates that both superdeformed bands correspond to a local potential energy minimum with a pronounced triaxiality, γ∼ 20°.

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Authors and Affiliations

  1. Institut für Strahlen und Kernphysik, Nussallee 14-16, Universität Bonn, D-53115 Bonn, Germany, , , , , , DE

    G. Schönwaßer, H. Hübel, J. Domscheit & A. Görgen

  2. The Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark, , , , , , DK

    G.B. Hagemann, B. Herskind, G. Sletten & J.N. Wilson

  3. Laboratori Nazionali di Legnaro, INFN, I-35020 Legnaro, Italy, , , , , , IT

    D.R. Napoli

  4. Dipartimento di Fisica and INFN, I-35131 Padua, Italy, , , , , , IT

    C. Rossi-Alvarez & D. Bazzacco

  5. Department of Mathematical Physics, Lund Institute of Technology, S-22362 Lund, Sweden, , , , , , SE

    R. Bengtsson

  6. Department of Physics, University of Lund, S-22362 Lund, Sweden, , , , , , SE

    H. Ryde

  7. Department of Physics, University of Oslo, PB 1048 Blindern, N-0316 Oslo, Norway, , , , , , NO

    P.O. Tjøm & S.W. Ødegård

Authors
  1. G. Schönwaßer
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  2. H. Hübel
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  3. G.B. Hagemann
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  4. J. Domscheit
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  5. A. Görgen
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  6. B. Herskind
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  7. G. Sletten
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  8. J.N. Wilson
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  9. D.R. Napoli
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  10. C. Rossi-Alvarez
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  11. D. Bazzacco
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  12. R. Bengtsson
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  13. H. Ryde
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  14. P.O. Tjøm
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  15. S.W. Ødegård
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Additional information

Received: 8 November 2001 / Accepted: 9 January 2002

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Schönwaßer, G., Hübel, H., Hagemann, G. et al. Lifetimes of triaxial superdeformed states in 163Lu and 164Lu. Eur Phys J A 13, 291–296 (2002). https://doi.org/10.1007/s10050-002-8758-5

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  • DOI: https://doi.org/10.1007/s10050-002-8758-5

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