We present preliminary results of barrier height distribution measurements for 24Mg+90;92Zr systems. The experiment was performed at LNS INFN in Catania with the CHIMERA detector system and a 24Mg beam accelerated by Tandem MP. The measurements were done at the near-barrier beam energies of 68-88.5 MeV. A discrepancy between experimental results and the predictions of Coupled Channels (CC) calculations was observed. We suggest that this discrepancy may be due to a cumulative effect of many individual weak channels such as non-collective excitations of the target, which cannot be fully implemented in practical CC calculations of a standard form.
Influence of single particle excitations on barrier distributions: 24Mg+90;92Zr
Dell'aquila, D.Membro del Collaboration Group
;Gnoffo, B.Membro del Collaboration Group
;Lanzalone, G.Membro del Collaboration Group
;Lombardo, I.Membro del Collaboration Group
;Martorana, N. S.Membro del Collaboration Group
;Pagano, E. V.Membro del Collaboration Group
;Papa, M.Membro del Collaboration Group
;Pirrone, S.Membro del Collaboration Group
;Politi, G.;Quattrocchi, L.;Rizzo, F.;Russotto, P.;Trimarchi, M.;
2018-01-01
Abstract
We present preliminary results of barrier height distribution measurements for 24Mg+90;92Zr systems. The experiment was performed at LNS INFN in Catania with the CHIMERA detector system and a 24Mg beam accelerated by Tandem MP. The measurements were done at the near-barrier beam energies of 68-88.5 MeV. A discrepancy between experimental results and the predictions of Coupled Channels (CC) calculations was observed. We suggest that this discrepancy may be due to a cumulative effect of many individual weak channels such as non-collective excitations of the target, which cannot be fully implemented in practical CC calculations of a standard form.| File | Dimensione | Formato | |
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