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Signature inversion in the semidecoupled \(\pi h_{9/2} \otimes \nu i_{13/2}\) band of the odd-odd nucleus 172 Lu

  • Ts Venkova
  • R. M. Lieder
  • W. Gast
  • D. Bazzacco
  • G. de Angelis
  • E. O. Lieder
  • H. M. Jäger
  • L. Mihailescu
  • R. Menegazzo
  • S. Lunardi
  • C. Rossi Alvarez
  • C. Ur
  • T. Martinez
  • M. Axiotis
  • D. Napoli
  • W. Urban
  • T. Rzaca-Urban
Letter

Abstract.

High-spin states in the odd-odd nucleus 172Lu have been populated in a 170Er(7Li,5n) reaction at 51 MeV and the emitted \(\gamma\)-radiation was detected with the GASP array. A new semidecoupled band with the proposed \(\pi 1/2^-[541] \otimes \nu 7/2^ + [633]\) configuration has been established exhibiting a signature inversion. A systematic study of the signature inversion in odd-odd nuclei of the rare-earth region is presented. The variation of the inversion spin remains nearly constant for nuclei with the same N-Z, increases with N for an isotopic chain and decreases with Z for an isotonic chain. On the basis of the systematics a change of the spins by \(1\hbar\) is proposed for the semidecoupled bands in 180Re, 182,184Ir and 184,186Au.

Keywords

Radiation Systematic Study Signature Inversion Isotopic Chain Inversion Spin 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  • Ts Venkova
    • 1
    • 2
  • R. M. Lieder
    • 1
  • W. Gast
    • 1
  • D. Bazzacco
    • 3
  • G. de Angelis
    • 4
  • E. O. Lieder
    • 1
  • H. M. Jäger
    • 1
  • L. Mihailescu
    • 1
  • R. Menegazzo
    • 3
  • S. Lunardi
    • 3
  • C. Rossi Alvarez
    • 3
  • C. Ur
    • 3
  • T. Martinez
    • 3
  • M. Axiotis
    • 4
  • D. Napoli
    • 4
  • W. Urban
    • 5
  • T. Rzaca-Urban
    • 5
  1. 1.Institut für KernphysikForschungszentrum JülichJülichGermany
  2. 2.Institute of Nuclear Research and Nuclear EnergyBulgarian Academy of SciencesSofiaBulgaria
  3. 3.Dipartimento di Fisica dell’Universitá and Istituto Nazionale di Fisica NucleareSezione di PadovaPadovaItaly
  4. 4.Laboratori Nazionali di LegnaroIstituto Nazionale di Fisica NucleareLegnaro (Padova)Italy
  5. 5.Institute of Experimental PhysicsUniversity of WarsawWarszawaPoland

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