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The European Physical Journal A

, Volume 32, Issue 3, pp 245–250 | Cite as

Isomeric states in 253No

  • A. Lopez-MartensEmail author
  • K. Hauschild
  • A. V. Yeremin
  • O. Dorvaux
  • A. V. Belozerov
  • Ch. Briançon
  • M. L. Chelnokov
  • V. I. Chepigin
  • D. Curien
  • P. Désesquelles
  • B. Gall
  • V. A. Gorshkov
  • M. Guttormsen
  • F. Hanappe
  • A. P. Kabachenko
  • F. Khalfallah
  • A. Korichi
  • A. C. Larsen
  • O. N. Malyshev
  • A. Minkova
  • Yu. Ts. Oganessian
  • A. G. Popeko
  • M. Rousseau
  • N. Rowley
  • R. N. Sagaidak
  • S. Sharo
  • A. V. Shutov
  • S. Siem
  • L. Stuttgé
  • A. I. Svirikhin
  • N. U. H. Syed
  • Ch. Theisen
Regular Article - Nuclear Structure and Reactions

Abstract.

Isomeric states in 253No have been investigated by conversion electron and γ -ray spectroscopy with the GABRIELA detection system. The 31μs isomer reported more than 30 years ago is found to decay to the ground state of 253No by the emission of a 167keV M2 transition. The spin and parity of this low-lying isomeric state are established to be 5/2+ . The presence of another longer-lived isomeric state is also discussed.

PACS.

21.10.-k Properties of nuclei; nuclear energy levels 21.10.Tg Lifetimes 23.20.Lv γ transitions and level energies 23.20.Nx Internal conversion and extranuclear effects 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • A. Lopez-Martens
    • 1
    Email author
  • K. Hauschild
    • 1
  • A. V. Yeremin
    • 2
  • O. Dorvaux
    • 3
  • A. V. Belozerov
    • 2
  • Ch. Briançon
    • 1
  • M. L. Chelnokov
    • 2
  • V. I. Chepigin
    • 2
  • D. Curien
    • 3
  • P. Désesquelles
    • 4
    • 1
  • B. Gall
    • 3
  • V. A. Gorshkov
    • 2
  • M. Guttormsen
    • 5
  • F. Hanappe
    • 6
  • A. P. Kabachenko
    • 2
  • F. Khalfallah
    • 3
  • A. Korichi
    • 1
  • A. C. Larsen
    • 5
  • O. N. Malyshev
    • 2
  • A. Minkova
    • 7
    • 8
  • Yu. Ts. Oganessian
    • 2
  • A. G. Popeko
    • 2
  • M. Rousseau
    • 3
  • N. Rowley
    • 3
  • R. N. Sagaidak
    • 2
  • S. Sharo
    • 9
  • A. V. Shutov
    • 2
  • S. Siem
    • 5
  • L. Stuttgé
    • 3
  • A. I. Svirikhin
    • 2
  • N. U. H. Syed
    • 5
  • Ch. Theisen
    • 10
  1. 1.CSNSM, IN2P3-CNRS, UMR8609France
  2. 2.FLNR, JINRDubnaRussia
  3. 3.IPHC-DRS, ULP, IN2P3-CNRSStrasbourgFrance
  4. 4.Université Paris-SudOrsayFrance
  5. 5.Department of PhysicsOslo UniversityOsloNorway
  6. 6.Université Libre de BruxellesBruxellesBelgium
  7. 7.Faculty of PhysicsUniversity of SofiaSofiaBulgaria
  8. 8.INRNE, BASSofiaBulgaria
  9. 9.Department of PhysicsComenius UniversityBratislavaSlovakia
  10. 10.CEA-Saclay, DSM/DAPNIA/SPhNGif-sur-YvetteFrance

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