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.
Investigation
;
Norella, S.
Investigation
;
Quattrocchi, L.
Investigation
;
Trifiro, A.
Investigation
;
Trimarchi, M.
Investigation
;
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.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11570/3126045
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