On the various derivations of the energy dependence of the empirical optical potential

Passatore, G.

doi:10.1016/0375-9474(75)90529-1

Cited by 17 publications

(2 citation statements)

References 24 publications

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“…This energy dependence is consistent with existing parametrizations (see eg. [42,43,44]) and is a consequence of Passatore's [45,46] application of Feshbach dispersion relation. Within the energy interval considered in the present work, the energy variation of J v is small, remaining around the value 360 MeV fm 3 , which is consistent with the value found by Mohr [47] in the analysis of the 6 He+ 209 Bi reaction at energies around the Coulomb barrier.…”

Section: Optical Model Analysis With a Long Range Real Potentialmentioning

confidence: 99%

Long range effects on the optical model of 6He around the Coulomb barrier

Fernández‐García¹,

Rodríguez‐Gallardo²,

Álvarez³

et al. 2010

Nuclear Physics A

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We present an optical model (OM) analysis of the elastic scattering data of the reactions 6 He+ 27 Al and 6 He+ 208 Pb at incident energies around the Coulomb barrier. The bare part of the optical potential is constructed microscopically by means of a double folding procedure, using the São Paulo prescription without any renormalization. This bare interaction is supplemented with a Coulomb dipole polarization (CDP) potential, which takes into account the effect of the dipole Coulomb interaction. For this CDP potential, we use an analytical formula derived from the semiclassical theory of Coulomb excitation. The rest of the optical potential is parametrized in terms of Woods-Saxon shapes. In the 6 He+ 208 Pb case, the analysis confirms the presence of long range components, in agreement with previous works. Four-body Continuum-Discretized Coupled-Channels calculations have been performed in order to better understand the features of the optical potentials found in the OM analysis. This study searches to elucidate some aspects of the optical potential of weakly bound systems, such as the dispersion relation and the long range (attractive and absorptive) mechanisms.

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Section: Optical Model Analysis With a Long Range Real Potentialmentioning

confidence: 99%

Long range effects on the optical model of 6He around the Coulomb barrier

Fernández‐García¹,

Rodríguez‐Gallardo²,

Álvarez³

et al. 2010

Nuclear Physics A

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“…This type of energy dependence is in accord with Passatore's [30][31][32] application of Feshbach's dispersion relation [33]. 9); the dashed line corresponds to a fit to the data in the region E N > 20 MeV/nucleon using Eq.…”

Section: Volume Integral Systematicsmentioning

confidence: 48%

General behavior of the effective nucleon-nucleon interaction as a function of the relative velocity

Chamon

Álvarez

2005

Phys. Rev. C

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We have studied volume integrals of the central part of optical potentials extracted from data analyses for a variety of light and heavy systems. The data-extracted integrals present a quite simple behavior as a function of the relative velocity between target and projectile. This behavior is system independent and, therefore, it reflects a feature of the effective nucleon-nucleon interaction itself. The overall results are in good agreement with the predictions of the São Paulo potential, which is a model for the nuclear interaction that so far has been employed mostly in analyses of heavy-ion reactions.

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Theoretical Investigations of the Optical Model for Nucleons at Negative, Low and Intermediate Energies

Mahaux

1979

Common Problems in Low- And Medium-Energy Nuclear Physics

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On the various derivations of the energy dependence of the empirical optical potential

Cited by 17 publications

References 24 publications

Long range effects on the optical model of 6He around the Coulomb barrier

Long range effects on the optical model of 6He around the Coulomb barrier

General behavior of the effective nucleon-nucleon interaction as a function of the relative velocity

Theoretical Investigations of the Optical Model for Nucleons at Negative, Low and Intermediate Energies

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