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Coexisting wobbling and quasiparticle excitations in the triaxial potential well of 163 Lu

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Abstract.

High-spin states of the nucleus 163Lu have been populated through the fusion-evaporation reaction 139La(29Si, 5n) with a beam energy of 157 MeV. In addition to the two lowest excited triaxial strongly deformed (TSD) bands, recently interpreted as one- and two-phonon wobbling excitations, a third excited TSD band has been firmly established decaying to the yrast TSD band. The assignment of this band as a three-quasiparticle band shows together with the normal deformed (ND) level scheme the presence not only of shape coexistence between ND and TSD structures, but also an interplay of wobbling and quasiparticle excitations in the triaxial strongly deformed potential well of 163Lu.

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Authors and Affiliations

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

    D. R. Jensen, G. B. Hagemann, I. Hamamoto, B. Herskind, G. Sletten & J. N. Wilson

  2. Department of Mathematical Physics, LTH, University of Lund, Lund, Sweden

    I. Hamamoto

  3. Department of Physics, University of Oslo, PB 1048 Blindern, N-0316, Oslo, Norway

    S. W. Ødegård

  4. Department of Electronic Engineering and Physics, University of Paisley, UK

    K. Spohr

  5. Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn, Nußallee 14-16, D-53115, Bonn, Germany

    H. Hübel, P. Bringel, A. Neußer, G. Schönwaßer & A. K. Singh

  6. Mississippi State University, MS 39762, Mississippi State, USA

    W. C. Ma & H. Amro

  7. Dipartimento di Fisica and INFN, Sezione di Milano, Milano, Italy

    A. Bracco, S. Leoni & G. Benzoni

  8. Niewodniczanski Insitute of Nuclear Physics, Krakow, Poland

    A. Maj & P. Bednarczyk

  9. Dipartimento di Fisica and INFN, Sezione di Padova, Padova, Italy

    C. M. Petrache

  10. Dipartimento di Matematica e Fisica, Universitá di Camerino, Camerino, Italy

    C. M. Petrache & G. Lo Bianco

  11. IReS, 23 rue du Loess, BP28, F-67037, Strasbourg, France

    P. Bednarczyk & D. Curien

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  1. D. R. Jensen
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Corresponding author

Correspondence to G. B. Hagemann.

Additional information

Communicated by D. Schwalm

Received: 18 July 2003, Revised: 28 August 2003, Published online: 23 December 2003

PACS:

21.10.-k Properties of nuclei; nuclear energy levels - 23.20.Lv \(\gamma\) transitions and level energies - 25.70.-z Low and intermediate energy heavy-ion reactions - 27.70. + q \(150\leq A \leq 189\)

H. Amro: Present address: Wright Nuclear Structure Laboratory, Yale University, New Haven, CT 06520-8124, USA.

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Jensen, D.R., Hagemann, G.B., Hamamoto, I. et al. Coexisting wobbling and quasiparticle excitations in the triaxial potential well of 163 Lu . Eur. Phys. J. A 19, 173–185 (2004). https://doi.org/10.1140/epja/i2003-10120-5

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