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Identification of levels above 6- isomeric state in 66Cu

  • Regular Article - Experimental Physics
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Abstract.

Excited states in odd-odd 66Cu were investigated in a reaction between a 136MeV 30Si beam and a 65Cu target with the Indian National Gamma Array. Six new transitions have been identified including four transitions feeding the 600ns \(6^{-}\) isomeric state from an investigation of prompt-prompt and prompt-delayed coincidence events. The results of the present work have extended the level structure of this nucleus up to \(I^{\pi}=(9^{-})\). In addition, new information on the set of \( \pi p_{3/2} \nu g_{9/2}\) multiplets in this nucleus have been added. Shell model calculations were performed within the \( fpg_{9/2}\) and \( f_{5/2}pg_{9/2}\) model spaces. The results of shell model calculations using the \( fpg_{9/2}\) model space have been observed to be in better agreement with experimental excitation energies up to the highest spin observed. The results of the present work highlight the necessity of \( f_{7/2}\) proton holes to describe the positive as well as negative parity states in 66Cu.

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Authors and Affiliations

  1. Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, 400005, Mumbai, India

    Purnima Singh, R. Palit, S. Biswas, S. Saha & J. Sethi

  2. ELI-NP, Horia Hulubei National Institute for Physics and Nuclear Engineering, 077125, Magurele, Romania

    D. Choudhury

  3. Department of Physics, Indian Institute of Technology Roorkee, 247 667, Roorkee, India

    P. C. Srivastava

  4. Department of Chemistry and Biochemistry, University of Maryland, 20742, College Park, MD, USA

    J. Sethi

Authors
  1. Purnima Singh
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  2. R. Palit
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  4. P. C. Srivastava
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  5. S. Biswas
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Correspondence to Purnima Singh.

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Communicated by P. Woods

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Singh, P., Palit, R., Choudhury, D. et al. Identification of levels above 6- isomeric state in 66Cu . Eur. Phys. J. A 53, 69 (2017). https://doi.org/10.1140/epja/i2017-12258-9

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  • DOI: https://doi.org/10.1140/epja/i2017-12258-9

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