Alpha-nucleus elastic scattering at intermediate energies

The purpose of this paper is twofold. First, we present the extension of the Liège intranuclear-cascade model to reactions induced by light ions. We describe here the ideas upon which we built our treatment of nucleus-nucleus reactions and we compare the model predictions against a vast set of heterogeneous experimental data. In spite of the discussed limitations of the intranuclear-cascade scheme, we find that our model yields valid predictions for a number of observables and positions itself as one of the most attractive alternatives available to GEANT4 users for the simulation of light-ion-induced reactions. Second, we describe the C++ version of the code, which is physicswise equivalent to the legacy version, is available in GEANT4, and will serve as the basis for all future development of the model.

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“…Experimental data refer to [56][57][58] Fe and [58][59][60] Ni targets and are taken from Refs. [53][54][55][56].…”

Section: A Reactions Induced By Pionsmentioning

confidence: 99%

Extension of the Liège intranuclear-cascade model to reactions induced by light nuclei

et al. 2014

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“…As suggested in Ref. [42], the 10 Be-Pb potential is scaled from a parametrisation of Bonin et al [43] that describes elastic scattering of 699 MeV α particles on lead [potential (1) in Table III of Ref. [27]].…”

Section: Numerical Aspectsmentioning

confidence: 99%

Coulomb-corrected eikonal description of the breakup of halo nuclei

2008

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The eikonal description of breakup reactions diverges because of the Coulomb interaction between the projectile and the target. This divergence is due to the adiabatic, or sudden, approximation usually made, which is incompatible with the infinite range of the Coulomb interaction. A correction for this divergence is analysed by comparison with the Dynamical Eikonal Approximation, which is derived without the adiabatic approximation. The correction consists in replacing the first-order term of the eikonal Coulomb phase by the first-order of the perturbation theory. This allows taking into account both nuclear and Coulomb interactions on the same footing within the computationally efficient eikonal model. Excellent results are found for the dissociation of 11 Be on lead at 69 MeV/nucleon. This Coulomb Corrected Eikonal approximation provides a competitive alternative to more elaborate reaction models for investigating breakup of three-body projectiles at intermediate and high energies.

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“…For lower incident energies of E in /A P = 20-60 MeV, the DF-FDA model (dotted line) overestimates the experimental data [39][40][41][42], but this problem is solved by the DF-TDA model (solid line) that well reproduces the data. For higher energies around E in /A P = 175 MeV, meanwhile, the DF-FDA model underestimates the experimental data [43], but this problem is also solved by the DF-TDA model that reproduces the data. For intermediate energies of E in /A P = 72-120 MeV, the difference between the DF-TDA and DF-FDA results is rather small, so that both the models reasonably reproduce the data.…”

Section: The Naf Modelmentioning

confidence: 92%

Microscopic optical potentials forHe4scattering

et al. 2014

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We present a reliable double-folding (DF) model for 4 He-nucleus scattering, using the Melbourne g-matrix nucleon-nucleon interaction that explains nucleon-nucleus scattering with no adjustable parameter. In the DF model, only the target density is taken as the local density in the Melbourne g-matrix. For 4 He elastic scattering from 58 Ni and 208 Pb targets in a wide range of incident energies from 20 MeV/nucleon to 200 MeV/nucleon, the DF model with the target-density approximation (TDA) yields much better agreement with the experimental data than the usual DF model with the frozen-density approximation in which the sum of projectile and target densities is taken as the local density. We also discuss the relation between the DF model with the TDA and the conventional folding model in which the nucleon-nucleus potential is folded with the 4 He density.

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Alpha-nucleus elastic scattering at intermediate energies

Cited by 83 publications

References 39 publications

Extension of the Liège intranuclear-cascade model to reactions induced by light nuclei

Extension of the Liège intranuclear-cascade model to reactions induced by light nuclei

Coulomb-corrected eikonal description of the breakup of halo nuclei

Microscopic optical potentials forHe4scattering

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