Evidence for non-yrast states in 254No

  • S. Eeckhaudt
  • P. T. Greenlees
  • N. Amzal
  • J. E. Bastin
  • E. Bouchez
  • P. A. Butler
  • A. Chatillon
  • K. Eskola
  • J. Gerl
  • T. Grahn
  • A. Görgen
  • R. -D. Herzberg
  • F. P. Hessberger
  • A. Hürstel
  • P. J. C. Ikin
  • G. D. Jones
  • P. Jones
  • R. Julin
  • S. Juutinen
  • H. Kettunen
  • T. L. Khoo
  • W. Korten
  • P. Kuusiniemi
  • Y. Le Coz
  • M. Leino
  • A. -P. Leppänen
  • P. Nieminen
  • J. Pakarinen
  • J. Perkowski
  • A. Pritchard
  • P. Reiter
  • P. Rahkila
  • C. Scholey
  • Ch. Theisen
  • J. Uusitalo
  • K. Van de Vel
  • J. Wilson
Original Article

Abstract.

Evidence for the decay of non-yrast states in 254No has been observed for the first time in an experiment performed at the University of Jyväskylä. The experiment employed the JUROGAM array of germanium detectors coupled to the gas-filled recoil separator RITU and the focal-plane spectrometer GREAT. The ground-state rotational band has been tentatively extended up to a spin of 24ℏ and has a smoothly behaving dynamical moment of inertia. It is speculated that the observation of high-energy γ-rays is due to the decay of a K = 3 band-head state.

PACS.

23.20.Lv γ transitions and level energies 27.90.+b 220≤A 29.30.-h Spectrometers and spectroscopic techniques 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2005

Authors and Affiliations

  • S. Eeckhaudt
    • 1
  • P. T. Greenlees
    • 1
  • N. Amzal
    • 2
  • J. E. Bastin
    • 2
  • E. Bouchez
    • 3
  • P. A. Butler
    • 2
    • 4
  • A. Chatillon
    • 3
  • K. Eskola
    • 5
  • J. Gerl
    • 6
  • T. Grahn
    • 1
  • A. Görgen
    • 3
  • R. -D. Herzberg
    • 2
  • F. P. Hessberger
    • 6
  • A. Hürstel
    • 3
  • P. J. C. Ikin
    • 2
  • G. D. Jones
    • 2
  • P. Jones
    • 1
  • R. Julin
    • 1
  • S. Juutinen
    • 1
  • H. Kettunen
    • 1
  • T. L. Khoo
    • 7
  • W. Korten
    • 3
  • P. Kuusiniemi
    • 6
  • Y. Le Coz
    • 3
  • M. Leino
    • 1
  • A. -P. Leppänen
    • 1
  • P. Nieminen
    • 1
  • J. Pakarinen
    • 1
  • J. Perkowski
    • 1
  • A. Pritchard
    • 2
  • P. Reiter
    • 8
  • P. Rahkila
    • 1
  • C. Scholey
    • 1
  • Ch. Theisen
    • 3
  • J. Uusitalo
    • 1
  • K. Van de Vel
    • 1
  • J. Wilson
    • 3
  1. 1.Department of PhysicsUniversity of JyväskyläJyväskyläFinland
  2. 2.Oliver Lodge LaboratoryUniversity of LiverpoolLiverpoolUK
  3. 3.DAPNIA/SPhNCEA-SaclaySaclayFrance
  4. 4.CERN-ISOLDEGenevaSwitzerland
  5. 5.Department of PhysicsUniversity of HelsinkiHelsinkiFinland
  6. 6.GSIDarmstadtGermany
  7. 7.Argonne National LaboratoryArgonneUSA
  8. 8.IKPUniversity of CologneCologneGermany

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