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Il Nuovo Cimento A (1971-1996)

, Volume 110, Issue 9–10, pp 989–999 | Cite as

Search for electromagnetic transitions between12C-12C cluster states in24Mg

  • F. Haas
  • A. Elanique
  • R. M. Freeman
  • C. Beck
  • R. Nouicer
  • D. L. Watson
  • C. Jones
  • R. Cowin
  • P. Lee
  • Z. Basrak
Article

Summary

The superdeformed states in heavy nuclei withA≳60 are characterized by their gamma decay pattern. In light nuclei, this signature is still missing especially for the cluster states formed in light heavy-ion reactions. The aim of the present experiment was thus to search for γ-ray transitions between 10+ and 8+ resonant states formed in the12C +12C reaction. A bombarding energy ofElab = 32.9 MeV has been chosen to populate a known and isolated 10+ resonance. The experiment has been carried out in a triple coincident mode (fragment-fragment-g) with the outgoing binary fragments detected in two position-sensitive Si detectors and the γ rays in the 4π array Château de Cristal. A few events have been observed which we attributed to the γ-ray transitions we searched for. This would be the first time that such transitions have been seen and, under certain assumptions, a radiative partial width of (1.2 ± 0.4) 3 1025 has been deduced for the 10+ resonant state.

PACS 25.70.Ef

Resonances 

PACS 23.20.Lv

Gamma transitions and level energies 

PACS 27.30

20 ≤ SA ≤ 38 

PACS 01.30.Cc

Conference proceedings 

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Copyright information

© Società Italiana di Fisica 1997

Authors and Affiliations

  • F. Haas
    • 1
  • A. Elanique
    • 1
  • R. M. Freeman
    • 1
  • C. Beck
    • 1
  • R. Nouicer
    • 1
  • D. L. Watson
    • 2
  • C. Jones
    • 2
  • R. Cowin
    • 2
  • P. Lee
    • 2
  • Z. Basrak
    • 3
  1. 1.Institut de Recherches SubatomiquesIN2P3-CNRS/Université Louis PasteurStrasbourg Cedex 2France
  2. 2.Department of PhysicsUniversity of YorkHeslingtonUK
  3. 3.Rudjer Boskovic InstituteZagrebCroatia

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