EPJ Web of Conferences (Jan 2016)

Clustering effects in fusion evaporation reactions with light even-even N=Z nuclei. The 24Mg and 28Si cases

  • Morelli L.,
  • Bruno M.,
  • D’Agostino M.,
  • Baiocco G.,
  • Gulminelli F.,
  • Cinausero M.,
  • Degerlier M.,
  • Fabris D.,
  • Gramegna F.,
  • Marchi T.,
  • Barlini S.,
  • Bini M.,
  • Casini G.,
  • Gelli N.,
  • Pasquali G.,
  • Piantelli S.,
  • Valdrè S.

DOI
https://doi.org/10.1051/epjconf/201612211002
Journal volume & issue
Vol. 122
p. 11002

Abstract

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In the recent years, cluster structures have been evidenced in many ground and excited states of light nuclei [1, 2]. The decay of highly excited states of 24Mg is studied in fusion evaporation events completely detected in charge in the reactions 12C+12C and 14N+10B at 95 and 80 MeV incident energy, respectively, and compared to the results of a pure statistical model [3, 4]. Inclusive variables are in general well reproduced by the model. We found clear deviations from the statistical model if we select emission channels involving multiple α particles which are more probable than expected from a purely statistical behavior. Data from 12C+12C reaction have been analyzed in order to study the decay of the Hoyle state of 12C* with two different selections: peripheral binary collisions and 6α decay channel in central events. To continue the investigation on light systems, we have recently measured the 16O+12C reaction at three different beam energies, namely Ebeam = 90, 110 and 130 MeV. Preliminary results are presented.