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M1 and E2 transition rates from core-excited states in semi-magic 94Ru

  • Regular Article - Experimental Physics
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Abstract.

Lifetimes of high-spin states have been measured in the semi-magic \((N=50)\) nucleus 94Ru. Excited states in 94Ru were populated in the 58Ni(40Ca, 4p)94Ru* fusion-evaporation reaction at the Grand Accélérateur National d’Ions Lourds (GANIL) accelerator complex. DSAM lifetime analysis was performed on the Doppler broadened line shapes in energy spectra obtained from \(\gamma\)-rays emitted while the residual nuclei were slowing down in a thick 6mg/cm^2 metallic 58Ni target. In total eight excited-state lifetimes in the angular momentum range \(I = (13-20)\hbar\) have been measured, five of which were determined for the first time. The corresponding B(M1) and B(E2) reduced transition strengths are discussed within the framework of large-scale shell model calculations to study the contribution of different particle-hole configurations, in particular for analyzing contributions from core-excited configurations.

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Authors and Affiliations

  1. Department of Physics, Royal Institute of Technology (KTH), SE-10691, Stockholm, Sweden

    A. Ertoprak, B. Cederwall, C. Qi, M. Doncel, U. Jakobsson, A. Atac, T. Bäck, F. Ghazi Moradi & H. Li

  2. Department of Physics, Faculty of Science, Istanbul University, Vezneciler/Fatih, 34134, Istanbul, Turkey

    A. Ertoprak & B. Akkus

  3. Department of Physics, Oliver Lodge Laboratory, University of Liverpool, L69 7ZE, Liverpool, UK

    M. Doncel

  4. Department of Chemistry, University of Helsinki, P.O. Box 3, 00014, Helsinki, Finland

    U. Jakobsson

  5. MTA Atomki, H-4001, Debrecen, Hungary

    B. M. Nyakó, I. Kuti, A. Algora, Zs. Dombrádi & J. Timár

  6. Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020, Legnaro, Italy

    G. Jaworski, D. R. Napoli, G. de Angelis, V. Modamio, M. Siciliano & J. J. Valiente-Dobón

  7. Department of Physics, University of York, YO10 5DD, Heslington, York, UK

    P. Davies, R. Wadsworth, H. Al Azri & D. M. Debenham

  8. Grand Accélérateur National d’Ions Lourds (GANIL), CEA/DSM - CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076, Caen Cedex 5, France

    G. de France, E. Clément & C. Michelagnoli

  9. UGC-DAE Consortium for Scientific Research, Kolkata Centre, 700098, Kolkata, India

    S. S. Ghugre & R. Raut

  10. Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46980, Valencia, Spain

    A. Algora, A. Gadea & T. Hüyük

  11. Dipartimento di Fisica e Astronomia, Università di Padova, Padova, Italy

    A. Boso & F. Recchia

  12. Nigde Omer Halisdemir University, Science and Art Faculty, Department of Physics, 51200, Nigde, Turkey

    S. Ertürk

  13. Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, 91405, Orsay, France

    A. Gottardo & C. M. Petrache

  14. Research Center for Nuclear Physics, Osaka University, Osaka, Japan

    E. Ideguchi

  15. Department of Physics and Astronomy, Uppsala University, SE-75120, Uppsala, Sweden

    J. Nyberg

  16. Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093, Warsaw, Poland

    M. Palacz

  17. University of Jyväskylä, Department of Physics, FI-40014, Jyväskylä, Finland

    M. Sandzelius

  18. Department of Physics, Tsinghua University, 100084, Beijing, China

    Z. G. Xiao

Authors
  1. A. Ertoprak
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  2. B. Cederwall
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  3. C. Qi
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  4. M. Doncel
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  5. U. Jakobsson
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  6. B. M. Nyakó
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  7. G. Jaworski
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  8. P. Davies
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  9. G. de France
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  10. I. Kuti
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  11. D. R. Napoli
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  17. A. Algora
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  18. G. de Angelis
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  19. A. Atac
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  20. T. Bäck
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  21. A. Boso
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  22. E. Clément
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  23. D. M. Debenham
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  24. Zs. Dombrádi
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  25. S. Ertürk
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  26. A. Gadea
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  27. F. Ghazi Moradi
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  28. A. Gottardo
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  29. T. Hüyük
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  30. E. Ideguchi
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  31. H. Li
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  32. C. Michelagnoli
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  33. V. Modamio
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  34. J. Nyberg
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  35. M. Palacz
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  36. C. M. Petrache
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  37. F. Recchia
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  38. M. Sandzelius
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  39. M. Siciliano
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  40. J. Timár
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  41. J. J. Valiente-Dobón
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Corresponding author

Correspondence to A. Ertoprak.

Additional information

Communicated by A. Gade

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Ertoprak, A., Cederwall, B., Qi, C. et al. M1 and E2 transition rates from core-excited states in semi-magic 94Ru. Eur. Phys. J. A 54, 145 (2018). https://doi.org/10.1140/epja/i2018-12581-7

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  • DOI: https://doi.org/10.1140/epja/i2018-12581-7

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