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New high-spin states of 147Nd and 145Ce: Octupole correlation in the N = 87 isotones

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Abstract.

High-spin states of the N = 87 nuclei, 147Nd and 145Ce, have been populated in the 12C + 238U and 18O + 208Pb fusion-fission reactions at 90 MeV and 85 MeV bombarding energy, respectively. The emitted γ-radiation was detected using the Euroball III and IV arrays. High-spin states of the 147Nd isotope have been identified for the first time. The high-spin yrast and near-to-yrast structures of the 145Ce nucleus have been considerably extended. The newly observed structures, discussed by analogy with the neighbouring isotones, show the coupling of an h9/2 neutron to the quadrupole and octupole excitations of the core.

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Authors and Affiliations

  1. CSNSM, IN2P3-CNRS/Université Paris-Sud, 91405, Orsay, France

    Ts. Venkova, M. -G. Porquet, A. Astier, I. Deloncle, P. Petkov & A. Prévost

  2. Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1784, Sofia, Bulgaria

    Ts. Venkova & P. Petkov

  3. IReS, IN2P3-CNRS/Université Louis Pasteur, 67037, Strasbourg Cedex 2, France

    F. Azaiez, A. Buta, D. Curien, O. Dorvaux, G. Duchêne, B. J. P. Gall, F. Khalfallah, I. Piqueras & M. Rousseau

  4. JINR, Joliot-Curie 6, 141980, Dubna, Moscow region, Russia

    A. Bogachev

  5. Department of Physics and Astronomy, University of Manchester, M13 9PL, Manchester, UK

    J. Durell & A. Roach

  6. Commissariat à l'Énergie Atomique, CEA/DSM/DAPNIA/SPhN, 91191, Gif-sur-Yvette Cedex, France

    M. Houry, R. Lucas & Ch. Theisen

  7. IPNL, IN2P3-CNRS/Université Claude Bernard, 69622, Villeurbanne Cedex, France

    M. Meyer, N. Redon & O. Stézowski

Authors
  1. Ts. Venkova
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  2. M. -G. Porquet
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  3. A. Astier
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  4. I. Deloncle
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  5. P. Petkov
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  6. A. Prévost
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  7. F. Azaiez
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  8. A. Bogachev
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  9. A. Buta
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  10. D. Curien
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  11. O. Dorvaux
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  12. G. Duchêne
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  13. J. Durell
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  14. B. J. P. Gall
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  15. M. Houry
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  16. F. Khalfallah
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  17. R. Lucas
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  18. M. Meyer
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  19. I. Piqueras
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  20. N. Redon
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  21. A. Roach
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  22. M. Rousseau
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  23. O. Stézowski
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  24. Ch. Theisen
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Corresponding author

Correspondence to M. -G. Porquet.

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D. Schwalm

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Venkova, T., Porquet, M.G., Astier, A. et al. New high-spin states of 147Nd and 145Ce: Octupole correlation in the N = 87 isotones. Eur. Phys. J. A 26, 315–319 (2005). https://doi.org/10.1140/epja/i2005-10181-4

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  • DOI: https://doi.org/10.1140/epja/i2005-10181-4

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