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New states in heavy Cd isotopes and evidence for weakening of the N = 82 shell structure

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Abstract:

A chemically selective laser ion source has been used in a β-decay study of heavy Ag isotopes into even-even Cd nuclides. Gamma-spectroscopic techniques in time-resolving event-by-event and multiscaling modes have permitted the identification of the first 2+ and 4+ levels in 126Cd78, 128Cd80, and tentatively the 2+ state in 130Cd82. From a comparison of these new states in 48Cd with the E(2+) and E(4+)/E(2+) level systematics of 46Pd and 52Te isotopes and several recent model predictions, possible evidence for a weakening of the spherical N = 82 neutron-shell below double-magic 132Sn is obtained.

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Authors and Affiliations

  1. Institut für Kernchemie, Universität Mainz, D-55128 Mainz, Germany, , , , , , DE

    T. Kautzsch, M. Hannawald, K.-L. Kratz, W. Böhmer, B. Pfeiffer & I. Klöckl

  2. Department of Chemistry, University of Maryland, College Park, MD 20742, USA, , , , , , US

    W.B. Walters

  3. Institute of Spectroscopy, Russian Academy of Sciences, RUS-142092 Troitzk, Russia, , , , , , RU

    V.I. Mishin & V.N. Fedoseyev

  4. CERN, CH-1211 Geneva 23, Switzerland, , , , , , CH

    Y. Jading, P. Van Duppen, A. Wöhr, V. Sebastian, U. Köster, M. Koizumi, J. Lettry, H.L. Ravn &  the ISOLDE Collaboration

  5. Theoretical Division, LANL, Los Alamos, NM 87545, USA, , , , , , US

    P. Möller

Authors
  1. T. Kautzsch
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  2. W.B. Walters
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  3. M. Hannawald
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  4. K.-L. Kratz
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  5. V.I. Mishin
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  6. V.N. Fedoseyev
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  7. W. Böhmer
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  8. Y. Jading
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  9. P. Van Duppen
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  10. B. Pfeiffer
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  11. A. Wöhr
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  12. P. Möller
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  13. I. Klöckl
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  14. V. Sebastian
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  15. U. Köster
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  16. M. Koizumi
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  17. J. Lettry
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  18. H.L. Ravn
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  19. the ISOLDE Collaboration
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Additional information

Received: 13 July 2000 / Accepted: 12 October 2000

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Kautzsch, T., Walters, W., Hannawald, M. et al. New states in heavy Cd isotopes and evidence for weakening of the N = 82 shell structure. Eur Phys J A 9, 201–206 (2000). https://doi.org/10.1007/s100500070038

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  • DOI: https://doi.org/10.1007/s100500070038

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