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Signature inversion in πi13/2⊗νi13/2 structure in 178Ir

  • D. Hojman
  • M.A. Cardona
  • D.R. Napoli
  • S.M. Lenzi
  • C.A. Ur
  • G. Lo Bianco
  • C.M. Petrache
  • M. Axiotis
  • D. Bazzacco
  • J. Davidson
  • M. Davidson
  • M. De Poli
  • G. de Angelis
  • E. Farnea
  • T. Kroell
  • S. Lunardi
  • N. Marginean
  • T. Martınez
  • R. Menegazzo
  • B. Quintana
  • C. Rossi Alvarez
Short note

Abstract:

High-spin states in 178Ir were investigated by means of in-beam γ-ray spectroscopy techniques using the multidetector array GASP. Excited states of 178Ir were populated through the 159Tb(24Mg, 5n) fusion-evaporation reaction at E(24Mg) = 131-141 MeV. Several rotational bands were observed. Among them, the πi13/2⊗νi13/2 structure has been identified up to spin 36 ?. This band exhibits an anomalous signature splitting and a signature inversion around spin 25 ?.

PACS. 21.10.Re Collective levels – 23.20.Lv γ transitons and level energies – 27.70.+q 150 ?A? 189 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2001

Authors and Affiliations

  • D. Hojman
    • 1
  • M.A. Cardona
    • 1
  • D.R. Napoli
    • 3
  • S.M. Lenzi
    • 4
  • C.A. Ur
    • 4
  • G. Lo Bianco
    • 5
  • C.M. Petrache
    • 5
  • M. Axiotis
    • 3
  • D. Bazzacco
    • 4
  • J. Davidson
    • 2
  • M. Davidson
    • 2
  • M. De Poli
    • 3
  • G. de Angelis
    • 3
  • E. Farnea
    • 3
  • T. Kroell
    • 4
  • S. Lunardi
    • 4
  • N. Marginean
    • 3
  • T. Martınez
    • 3
  • R. Menegazzo
    • 4
  • B. Quintana
    • 4
  • C. Rossi Alvarez
    • 4
  1. 1.Departamento de Fısica, CNEA, Buenos Aires, ArgentinaAR
  2. 2.CONICET, ArgentinaAR
  3. 3.INFN, Laboratori Nazionali di Legnaro, ItalyIT
  4. 4.Dipartimento di Fisica and INFN, Padova, ItalyIT
  5. 5.Dipartimento di Matematica e Fisica, Università di Camerino, ItalyIT

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