Cluster correlation effects in 12C+12C and 14N+10B fusion-evaporation reactions
1 Dipartimento di Fisica e Astronomia, Università di Bologna and INFN, Sezione di Bologna, Italy
2 Dipartimento di Fisica, Università di Pavia and INFN, Sezione di Pavia, Italy
3 CNRS, LPC, Caen and ENSICAEN, Caen, France
4 INFN-Laboratori Nazionali di Legnaro, Legnaro (PD), Italy
5 Physics Department, University of Nevsehir, Nevsehir, Turkey
6 INFN, Sezione di Padova, Padova, Italy
7 Dipartimento di Fisica e Astronomia, Università di Firenze and INFN, Sezione di Firenze, Italy
Published online: 24 April 2015
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. The comparison of light charged particles measured spectra with statistical model predictions suggests that the dominant reaction mechanism is compound nucleus (CN) formation and decay. However, in both reactions, a discrepancy with statistical expectations is found for α particles detected in coincidence with Carbon, Oxigen and Neon residues. The comparison between the two reactions shows that this discrepancy is only partly explained by an entrance channel effect. Evidence for cluster correlations in excited 24Mg CN is suggested by the comparison between the measured and calculated branching ratios for the channels involving α particles.
© Owned by the authors, published by EDP Sciences - SIF, 2015
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