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Yrast level structure of the neutron-deficient N = 80 isotones 146Dy, 147Ho and 148Er up to high-spin values

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Abstract:

High-spin level schemes of the N = 80 isotones 146Dy, 147Ho and 148Er have been investigated by in-beam γ-ray spectroscopic methods using the NORDBALL Compton-suppressed multidetector array including proton and neutron selection. The projectile-target system 58Ni + 92Mo at 260 MeV beam energy has been used to produce the neutron-deficient N = 80 isotones. The previously known schemes have been extended to considerably higher spin and exitation energy, up to I = 23?, E x≈ 8.9 MeV in 146Dy, I = 53/2?, E x≈ 8.7 MeV in 147Ho and I = 23?, E x≈ 9.6 MeV in 148Er. The results are discussed in terms of the spherical shell model. Many of the levels can be described within this framework.

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Authors and Affiliations

  1. Department of Physics, Chalmers University of Technology, and the University of Gothenburg, S-41296 Göteborg, Sweden, , , , , , SE

    H.A. Roth, S.E. Arnell, D. Foltescu & Ö. Skeppstedt

  2. Department of Physics, The Royal Institute of Technology, S-10405 Stockholm, Sweden, , , , , , SE

    J. Blomqvist

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

    G. de Angelis

  4. Dipartimento di Fisica dell'Università, and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy, , , , , , IT

    D. Bazzacco & S. Lunardi

Authors
  1. H.A. Roth
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  2. S.E. Arnell
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  3. D. Foltescu
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  4. Ö. Skeppstedt
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  5. J. Blomqvist
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  6. G. de Angelis
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  7. D. Bazzacco
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  8. S. Lunardi
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Received: 12 January 2001 / Accepted: 11 April 2001

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Roth, H., Arnell, S., Foltescu, D. et al. Yrast level structure of the neutron-deficient N = 80 isotones 146Dy, 147Ho and 148Er up to high-spin values. Eur Phys J A 10, 275–287 (2001). https://doi.org/10.1007/s100500170113

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  • DOI: https://doi.org/10.1007/s100500170113

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