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

Abstract : 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 24 Mg is studied in fusion evaporation events completely detected in charge in the reactions 12 C+ 12 C and 14 N+ 10 B 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 12 C+ 12 C reaction have been analyzed in order to study the decay of the Hoyle state of 12 C* 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 16 O+ 12 C reaction at three different beam energies, namely E beam = 90, 110 and 130 MeV. Preliminary results are presented.
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CNR*15 - 5th International Workshop on Compound-Nuclear Reactions and Related Topics, Oct 2015, Tokyo, Japan. 122, pp.11002, 2016, EPJ Web of Conferences. 〈10.1051/epjconf/201612211002〉
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L. Morelli, M. Bruno, G. Baiocco, F. Gulminelli, M. Cinausero, et al.. Clustering effects in fusion evaporation reactions with light even-even N=Z nuclei. The 24 Mg and 28 Si cases. CNR*15 - 5th International Workshop on Compound-Nuclear Reactions and Related Topics, Oct 2015, Tokyo, Japan. 122, pp.11002, 2016, EPJ Web of Conferences. 〈10.1051/epjconf/201612211002〉. 〈in2p3-01340233〉

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