Seniority v=5 States in 89Nb

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Yrast and yrare states in the nucleus Nb-89 have been studied in the reaction (Ni(Ar,5p)-Ni-58-Ar-36 by measuring gammagamma coincidences and directional correlation orientation ratios with the OSIRIS array. In addition, gamma-ray singles angular distributions have been taken with the reaction (Ni(Cl,4p)-Ni-58-Cl-35. Up to the highest spins observed (37/2+, 33/2-), the states identified line up with the ones predicted by the spherical shell model, taking into account three proton particles and two neutron holes in the 99/2 and P1/2 single-particle orbits. The shell model also reproduces most of the measured branching and E2/M1 mixing ratios. The mean lifetime of the 2152 keV 17/2- yrast state was determined as 0.74(7) ns.


  • A. Bödeker
  • K. P. Lieb
  • C. J. Gross
  • M. K. Kabadiyski
  • Dirk Rudolph
  • M. Weiszflog
  • J. Eberth
  • H. Grawe
  • J. Heese
  • K.-H. Maier
External organisations
  • External Organization - Unknown
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Pages (from-to)1617-1622
JournalPhysical Review C (Nuclear Physics)
Issue number4
Publication statusPublished - 1993
Publication categoryResearch

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