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Collective structures and smooth band termination in 109Sn

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Zeitschrift für Physik A Hadrons and nuclei

Abstract

Six rotational bands up to energies E x = 24.7 MeV and spins Jπ=(79/2−) have been identified in 109Sn using the GAMMASPHERE γ-detector array. Four of the bands show smoothly decreasing dynamic moments of inertia at rotational frequencies ℏω > 0.6 MeV. The bands arise at medium spins from a coupling of a valence d5/2, g7/2 or h11/2 neutron to the deformed 2p2h proton excitation of the Z=50 core 108Sn. At very high ℏω these bands show the typical behaviour of smoothly terminating bands, i.e. a gradual alignment of the angular momenta of the valence particles and holes corresponding to a transition from high collectivity to noncollective states.

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Author notes

  1. A. V. Afanasjev

    Present address: Nuclear Research Center, Latvian Academy of Sciences, Miera str. 31, LV-2169, Salaspils, Latvia

Authors and Affiliations

  1. Institut für Kern- und Teilchenphysik, TU Dresden, Mommsenstrasse 13, D-01062, Dresden, Germany

    L. Käubler

  2. Institut für Kern- und Hadronenphysik, Forschungszentrum Rossendorf, Postfach 510119, D-01314, Dresden, Germany

    L. Käubler, H. Schnare, H. Prade, J. Reif, R. Schwengner & G. Winter

  3. Department of Physics, State University of New York at Stony Brook, Stony Brook, NY, 11794, USA

    D. B. Fossan, I. Thorslund & P. Vaska

  4. Department of Mathematical Physics, Lund Institute of Technology, Box 118, S-22100, Lund, Sweden

    A. V. Afanasjev & I. Ragnarsson

  5. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Tzarigrad Chaussee 72, BG-1784, Sofia, Bulgaria

    W. Andrejtscheff

  6. Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool, L69 3BX, UK

    R. G. Allat & E. S. Paul

  7. Department of Physics, University of Toronto, Ontario, M5S 1A7, Canada

    J. de Graaf

  8. Hahn-Meitner-Institut Berlin, Bereich Schwerionenphysik, Glienicker Strasse 100, D-14109, Berlin, Germany

    H. Grawe, K. H. Maier & R. Schubart

  9. Department of Physics, University of York, Heslington, York, YO1 5DD, UK

    I. M. Hibbert, N. O’Brien & R. Wadsworth

  10. Nuclear Science Division, Lawrence Berkeley Laboratory, Berkeley, CA, 94720, USA

    I. Y. Lee & A. D. Macchiavelli

Authors
  1. L. Käubler
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  2. H. Schnare
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  3. D. B. Fossan
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  4. A. V. Afanasjev
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  5. W. Andrejtscheff
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  6. R. G. Allat
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  7. J. de Graaf
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  8. H. Grawe
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  9. I. M. Hibbert
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  10. I. Y. Lee
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  11. A. D. Macchiavelli
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  12. N. O’Brien
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  13. K. H. Maier
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  14. E. S. Paul
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  15. H. Prade
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  16. I. Ragnarsson
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  17. J. Reif
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  18. R. Schubart
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  19. R. Schwengner
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  20. I. Thorslund
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  21. P. Vaska
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  22. R. Wadsworth
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  23. G. Winter
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Corresponding author

Correspondence to L. Käubler.

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Käubler, L., Schnare, H., Fossan, D.B. et al. Collective structures and smooth band termination in 109Sn. Zeitschrift für Physik A 356, 235–237 (1996). https://doi.org/10.1007/s002180050173

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  • DOI: https://doi.org/10.1007/s002180050173

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