Advertisement

High-spin study of odd- A 49In isotopes beyond the neutron mid-shell

  • R. Lucas
  • M.-G. Porquet
  • Ts. Venkova
  • I. Deloncle
  • M. Houry
  • Ch. Theisen
  • A. Astier
  • A. Bauchet
  • S. Lalkovski
  • G. Barreau
  • N. Buforn
  • T.P. Doan
  • L. Donadille
  • O. Dorvaux
  • J. Durell
  • Th. Ethvignot
  • B.P.J. Gall
  • D. Grimwood
  • W. Korten
  • Y. Le Coz
  • M. Meyer
  • A. Minkova
  • A. Prévost
  • N. Redon
  • A. Roach
  • N. Schulz
  • A.G. Smith
  • O. Stézowski
  • B.J. Varley

Abstract:

The 115, 117, 119, 121In nuclei have been produced as fission fragments in three reactions induced by heavy ions: 12C + 238U at 90MeV bombarding energy, 18O + 208Pb reaction at 85MeV, and 31P + 176Yb at 152MeV. Their level schemes have been built from gamma-rays detected using the EUROBALL III and IV arrays. High-spin states of 117, 119, 121In nuclei have been identified for the first time. Moreover, isomeric states lying around 2.5MeV have been established in 119, 121In from the delayed coincidences between the fission fragment detector SAPhIR and the gamma array. Most of the observed states can be described by coupling a proton g9/2 hole to a Sn core, while the intruder band based on an orbital from the π[g7/2/d5/2] sub-shells behaves as the ground-state band of neighbouring Cd isotopes.

PACS. 21.60.Ev Collective models – 23.20.Lv Gamma transitions and level energies – 25.85.Ge Charged-particle-induced fission – 27.60.+j 90 ⩽ A ⩽ 149 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2002

Authors and Affiliations

  • R. Lucas
    • 1
  • M.-G. Porquet
    • 2
  • Ts. Venkova
    • 3
  • I. Deloncle
    • 2
  • M. Houry
    • 1
  • Ch. Theisen
    • 1
  • A. Astier
    • 4
  • A. Bauchet
    • 2
  • S. Lalkovski
    • 2
  • G. Barreau
    • 5
  • N. Buforn
    • 4
  • T.P. Doan
    • 5
  • L. Donadille
    • 6
  • O. Dorvaux
    • 7
  • J. Durell
    • 8
  • Th. Ethvignot
    • 9
  • B.P.J. Gall
    • 7
  • D. Grimwood
    • 8
  • W. Korten
    • 1
  • Y. Le Coz
    • 1
  • M. Meyer
    • 4
  • A. Minkova
    • 2
  • A. Prévost
    • 4
  • N. Redon
    • 4
  • A. Roach
    • 8
  • N. Schulz
    • 7
  • A.G. Smith
    • 8
  • O. Stézowski
    • 4
  • B.J. Varley
    • 8
  1. 1.Commissariat à l'Énergie Atomique, CEA/Saclay, DSM/DAPNIA/SPhN, 91191 Gif-sur-Yvette Cedex, FranceFR
  2. 2.CSNSM, IN2P3-CNRS and Université Paris-Sud, 91405 Orsay, FranceFR
  3. 3.INRNE, BAS, 1784 Sofia, BulgariaBG
  4. 4.IPNL, IN2P3-CNRS and Université Claude Bernard, 69622 Villeurbanne Cedex, FranceFR
  5. 5.CENBG, IN2P3-CNRS and Université Bordeaux I, 33175 Gradignan, FranceFR
  6. 6.School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, United KingdomGB
  7. 7.IReS, IN2P3-CNRS and Université Louis Pasteur, 67037 Strasbourg, FranceFR
  8. 8.Department of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, United KingdomGB
  9. 9.Commissariat à l'Energie Atomique Bruyères-le-Châtel, CEA/DIF/SPN, BP12, 91680 Bruyères-le-Châtel, FranceFR

Personalised recommendations