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Isomeric states in proton-unbound 187, 189Bi isotopes

  • A. Hürstel
  • M. Rejmund
  • E. Bouchez
  • P.T. Greenlees
  • K. Hauschild
  • S. Juutinen
  • H. Kettunen
  • W. Korten
  • Y. Le Coz
  • P. Nieminen
  • Ch. Theisen
  • A.N. Andreyev
  • F. Becker
  • T. Enqvist
  • P.M. Jones
  • R. Julin
  • H. Kankaanpää
  • A. Keenan
  • P. Kuusiniemi
  • M. Leino
  • A.-P. Leppänen
  • M. Muikku
  • J. Pakarinen
  • P. Rahkila
  • J. Uusitalo

Abstract:

Prompt and delayed gamma-ray spectroscopy of very neutron-deficient bismuth isotopes 187, 189Bi has been performed using the Recoil Decay Tagging (RTD) method. The isomeric i13/2 states have been identified and their lifetimes have been measured. The systematics of these long-lived M2 isomers has been extended to the proton-unbound isotopes. The general behaviour of single-proton states is discussed within the systematics and interpreted within the shell-model framework.

PACS. 23.20.Lv Gamma transitions and level energies – 27.70.+q 150 ⩽ A ⩽ 189 – 21.10.Tg Lifetimes 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2002

Authors and Affiliations

  • A. Hürstel
    • 1
  • M. Rejmund
    • 1
  • E. Bouchez
    • 1
  • P.T. Greenlees
    • 2
  • K. Hauschild
    • 1
  • S. Juutinen
    • 2
  • H. Kettunen
    • 2
  • W. Korten
    • 1
  • Y. Le Coz
    • 1
  • P. Nieminen
    • 2
  • Ch. Theisen
    • 1
  • A.N. Andreyev
    • 3
  • F. Becker
    • 1
  • T. Enqvist
    • 2
  • P.M. Jones
    • 2
  • R. Julin
    • 2
  • H. Kankaanpää
    • 2
  • A. Keenan
    • 2
  • P. Kuusiniemi
    • 2
  • M. Leino
    • 2
  • A.-P. Leppänen
    • 2
  • M. Muikku
    • 2
  • J. Pakarinen
    • 2
  • P. Rahkila
    • 2
  • J. Uusitalo
    • 2
  1. 1.DAPNIA/SPhN CEA-Saclay 91191 Gif-sur-Yvette Cedex, FranceFR
  2. 2.JYFL, University of Jyväskylä, FinlandFI
  3. 3.Department of Physics, University of Liverpool, UKGB

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