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
De Luca S.;
2018
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
