Beta-decay of 71Co and 73Co

  • M. Sawicka
  • I. Matea
  • H. Grawe
  • R. Grzywacz
  • M. Pfützner
  • M. Lewitowicz
  • J. M. Daugas
  • B. A. Brown
  • A. Lisetskiy
  • F. Becker
  • G. Bélier
  • C. Bingham
  • R. Borcea
  • E. Bouchez
  • A. Buta
  • E. Dragulescu
  • G. de France
  • G. Georgiev
  • J. Giovinazzo
  • F. Hammache
  • F. Ibrahim
  • P. Mayet
  • V. Méot
  • F. Negoita
  • F. De Oliveira-Santos
  • O. Perru
  • O. Roig
  • K. Rykaczewski
  • M. G. Saint-Laurent
  • J. E. Sauvestre
  • O. Sorlin
  • M. Stanoiu
  • I. Stefan
  • C. Stodel
  • Ch. Theisen
  • D. Verney
  • J. Żylicz
Article

Abstract.

A decay spectroscopy study of the neutron-rich cobalt isotopes has been performed using fragmentation of a 86Kr36+ beam and the new LISE2000 spectrometer at GANIL. For 71Co and 73Co, the β-delayed γ radiation has been observed for the first time, and the half-lives were found to be 79(5) ms and 41(4) ms, respectively. Features of the decay are discussed qualitatively in terms of nuclear models.

PACS.

25.70.Mn Projectile and target fragmentation 21.10.Tg Lifetimes 23.20.Lv γ transitions and level energies 27.50.+e 59 ⩽ A ⩽ 89 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2004

Authors and Affiliations

  • M. Sawicka
    • 1
  • I. Matea
    • 2
  • H. Grawe
    • 3
  • R. Grzywacz
    • 1
    • 4
  • M. Pfützner
    • 1
  • M. Lewitowicz
    • 2
  • J. M. Daugas
    • 5
  • B. A. Brown
    • 6
  • A. Lisetskiy
    • 6
  • F. Becker
    • 3
  • G. Bélier
    • 5
  • C. Bingham
    • 7
  • R. Borcea
    • 8
  • E. Bouchez
    • 9
  • A. Buta
    • 8
  • E. Dragulescu
    • 8
  • G. de France
    • 2
  • G. Georgiev
    • 2
  • J. Giovinazzo
    • 10
  • F. Hammache
    • 11
  • F. Ibrahim
    • 11
  • P. Mayet
    • 12
  • V. Méot
    • 5
  • F. Negoita
    • 8
  • F. De Oliveira-Santos
    • 2
  • O. Perru
    • 12
  • O. Roig
    • 5
  • K. Rykaczewski
    • 4
  • M. G. Saint-Laurent
    • 2
  • J. E. Sauvestre
    • 5
  • O. Sorlin
    • 11
  • M. Stanoiu
    • 2
  • I. Stefan
    • 8
  • C. Stodel
    • 2
  • Ch. Theisen
    • 9
  • D. Verney
    • 2
  • J. Żylicz
    • 1
  1. 1.IEPWarsaw UniversityWarsawPoland
  2. 2.GANILCaen Cedex 5France
  3. 3.Gesellschaft für Schwerionenforschung mbH, DarmstadtDarmstadtGermany
  4. 4.Physics DivisionORNLOak RidgeUSA
  5. 5.CEA Bruyéres-le-Châtel DIF/DPTA/SPNBruyères-le-ChâtelFrance
  6. 6.Department of Physics and Astronomy and NSCLMichigan State UniversityEast LansingUSA
  7. 7.Department of Physics and AstronomyUniversity of TennesseKnoxvilleUSA
  8. 8.IFINBucharest-MagureleRomania
  9. 9.CEA SaclayDSM/DAPNIA/SPhNGif-sur-Yvette CedexFrance
  10. 10.CENBGGradignan CedexFrance
  11. 11.IPNOrsay CedexFrance
  12. 12.IKSUniversity of LeuvenLeuvenBelgium

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