An imaginary potential with universal normalization for dissipative processes in heavy-ion reactions

Pereira, Daniervelin Renata Marques; Lubián, J.; Oliveira, J. R. B.; Sousa, Dayanne; Chamon, L. C.

doi:10.1016/j.physletb.2008.10.066

Cited by 90 publications

(95 citation statements)

References 48 publications

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“…The JLM interaction is a very simple complex effective N N interaction and easy to handle in the folding calculations and, hence, has widely been used in the nucleon-nucleus systems. Another widely-used interaction model is the São Paulo potential (SPP) [24][25][26] that is the DFM potential multiplied by the local-velocity-dependent Pauli non-locality correction factor. Both models still suffer from uncertainty originating from either existence of the free parameters or the lack of theoretical foundation of the models and assumptions.…”

Section: Introductionmentioning

confidence: 99%

Channel coupling effect and important role of imaginary part of coupling potential for high-energy heavy-ion scatterings

Furumoto

Sakuragi

2013

Phys. Rev. C

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The recent works by the present authors and their collaborator predicted that the real part of heavy-ion optical potentials changes its character from attraction to repulsion around the incident energy per nucleon E/A = 200 -300 MeV on the basis of the complex G-matrix interaction and the double-folding model (DFM) and revealed that the three-body force plays an important role there. In the present paper, we have analyzed the energy dependence of the coupling effect with the microscopic coupled channel (MCC) method and its relation to the elastic and inelastic-scattering angular distributions in detail in the case of the 12 C + 12 C system in the energy range of E/A = 100 -400 MeV. The large channel coupling effect is clearly seen in the elastic cross section although the incident energies are enough high. The dynamical polarization potential (DPP) is derived to investigate the channel coupling effect. Moreover, we analyze the effect of the imaginary part of the coupling potential on elastic and inelastic cross sections.

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Section: Introductionmentioning

confidence: 99%

Channel coupling effect and important role of imaginary part of coupling potential for high-energy heavy-ion scatterings

Furumoto

Sakuragi

2013

Phys. Rev. C

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“…This is discussed in detail in [5]. The resulting nuclear potential is presented in the following equation:…”

Section: The Spp Based Imaginary Potentialmentioning

confidence: 99%

“…With this potential a varied number of systems can be described very well (in CC calculations), such as: p+ 40 Ca, n+ 27 Al, 16 O+ 27 Al, 16 O+ 60 Ni, 58 Ni+ 124 Sn [5], without the readjustment of any parameter. For weakly bound cases, however, a modification of the real potential is necessary.…”

Section: The Spp Based Imaginary Potentialmentioning

confidence: 99%

“…It does not contain any adjustable parameter and, combined with coupled channel (CC) calculations, provides a powerful tool for predicting cross sections for quite different systems and energies around the Coulomb barrier [4]. Recently, a new generation of SPP/CC calculations has been developed [5] with the aim of describing reactions at energies for which dissipative processes, such as deep inelastic collisions (DIC), are important. This has been done with the introduction of an imaginary potential with the same shape of the SPP, and the predictions have been confirmed in diverse systems.…”

Section: Introductionmentioning

confidence: 99%

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Exploring the potential of the São Paulo Potential

Oliveira

Zagatto

Pereira

et al. 2010

EPJ Web of Conferences

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Abstract. Recent development of an imaginary potential based on the São Paulo potential is briefly presented.Further developments of the model in order to describe weakly bound systems (e.g. 7 Li + 120 Sn) are discussed and compared to experimental data. New preliminary data on the 18 O+ 110 Pd transitional system are also presented and apparent similarities to the weakly bound case are commented.

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“…The experiment was performed at the INFN-LNS laboratory in Catania using the large acceptance magnetic spectrometer MAGNEX [2][3][4]. The data analysis, based on parameter-free Coupled Channel (CC) calculations [5] and the São Paulo double folding potential, (SPP) [6] has confirmed the formation of a nuclear rainbow [7]. The failure of Optical Model (OM) calculations with the same optical potential in reproducing the measured cross sections reveals the crucial role of inelastic couplings in the rainbow formation.…”

Section: Introductionmentioning

confidence: 99%